582
FNUS55 KRIW 192012
FWFRIW

Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
212 PM MDT Sat Sep 19 2026

.DISCUSSION...

...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...

Shower and thunderstorm chances exist across the Dispatch Area
through 2000L before being largely confined to Zones 140, 415, and
416 overnight. Outside of any thunderstorm activity, expect
relatively light west to northwest winds. Occasional gusts are
possible across high elevations of Zone 414 through sunset. Relative
humidity remains well above critical values over the next 24 hours.
Drier conditions are forecast on Sunday with similar winds to
Saturday. Low shower and thunderstorm chances exist on Sunday
afternoon across far eastern portions of Zones 140, 415, and 416.

...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...

Showers and thunderstorms are expected across the entire Dispatch
Area through Sunday morning. Winds across most zones are forecast to
be from the north, with Zones 275, 282, and northern portions of 283
seeing gusts of 30 to 40 mph from roughly 1600L and 0300L Sunday.
All other areas can expect relatively light winds outside of
thunderstorm activity. Relative humidity remains well above critical
values over the next 24 hours. Additional shower and thunderstorm
chances on Sunday afternoon, mainly across Zones 286 and 288.

...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...

Shower and thunderstorm chances exist across the Dispatch Area
through the afternoon and evening, with the most numerous showers
and thunderstorms from Zone 279 and northeast. After sunset, chances
largely become confined to Zone 289 and northeast. Outside of any
thunderstorms, winds are forecast to be relatively light to moderate
and from the west across most zones this afternoon. Zone 281 and
portions of Zone 280 can expect a north wind. Occasional gusts
around 20 mph are possible in southern zones through sunset.
Relative humidity remains well above critical values over the next
24 hours. Shower and thunderstorm potential exists on Sunday for
Zones 280, 281, 285, and 300, with other zones remaining dry.

...Thunderstorms imply strong gusty and erratic winds...

WYZ280-202215-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening, then chance
                    of showers and thunderstorms early in the
                    evening. Some thunderstorms may produce gusty
                    winds, small hail, and heavy rainfall. Chance
                    of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....68-73.
   24 hr trend......7 degrees cooler.
Min humidity........45-51 percent.
   24 hr trend......16 percent wetter.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.5 percent.
Transport winds.....West around 15 mph.
Mixing Height.......4600-6600 ft agl.
Smoke dispersal.....Good.

.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
                    Chance of thunderstorms in the evening. Showers
                    likely through the night. Chance of
                    thunderstorms after midnight. Some
                    thunderstorms may produce gusty winds, small
                    hail, and heavy rainfall early in the evening.
                    Some thunderstorms may produce heavy rainfall
                    in the late evening and early morning. Some
                    thunderstorms may produce heavy rainfall early
                    in the morning. Chance of precipitation 70
                    percent.
Chance of thunder...40 percent.
Min temperature.....43-48.
   24 hr trend......5 degrees cooler.
Max humidity........87-93 percent.
   24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph and gusty.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.52 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 600-1200 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
                    morning. Slight chance of thunderstorms through
                    the day. Showers likely in the afternoon. Some
                    thunderstorms may produce heavy rainfall.
                    Chance of precipitation 70 percent.
Chance of thunder...20 percent.
Max temperature.....57-62.
   24 hr trend......10 degrees cooler.
Min humidity........67-73 percent.
   24 hr trend......18 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
                    mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.22 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3200-4400 ft
                    agl.
Smoke dispersal.....Poor to fair.

.SUNDAY NIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Slight chance of showers and thunderstorms
                    early in the evening. Chance of precipitation
                    20 percent.
Chance of thunder...10 percent.
Min temperature.....40-45.
   24 hr trend......4 degrees cooler.
Max humidity........86-92 percent.
   24 hr trend......Unchanged.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-1000 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
   24 hr trend......6 degrees warmer.
Min humidity........43-49 percent.
   24 hr trend......19 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft
                    agl.
Smoke dispersal.....Poor.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the lower 40s. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs in the
mid 70s. Southwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Lows around 50. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Highs in the upper 70s.

$$

WYZ283-202215-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers and
                    thunderstorms. Some thunderstorms may produce
                    gusty winds and small hail. Chance of
                    precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....63-68.
   24 hr trend......3 degrees cooler.
Min humidity........48-54 percent.
   24 hr trend......8 percent wetter.
20-foot winds.......Northwest winds around 10 mph with higher
                    gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.30 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......3400-5400 ft agl.
Smoke dispersal.....Fair.

.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
                    Showers and chance of thunderstorms in the
                    evening, then showers likely and slight chance
                    of thunderstorms after midnight. Patchy fog
                    after midnight. Some thunderstorms may produce
                    gusty winds and small hail early in the
                    evening. Some thunderstorms may produce heavy
                    rainfall after midnight. Chance of
                    precipitation near 100 percent.
Chance of thunder...30 percent.
Min temperature.....41-46.
   24 hr trend......7 degrees cooler.
Max humidity........87-93 percent.
   24 hr trend......14 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph with gusts to around
                    25 mph until 2400, then downslope/downvalley
                    4-7 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.60 percent until 2400, then 45 percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......800-2600 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Areas of fog in the morning. Chance of showers
                    through the day. Slight chance of thunderstorms
                    in the afternoon. Chance of precipitation 50
                    percent.
Chance of thunder...10 percent.
Max temperature.....57-62.
   24 hr trend......6 degrees cooler.
Min humidity........59-65 percent.
   24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then
                    northeast.
Chc of wetting rain.10 percent until 1200, then zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3200-4600 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening. Chance of
                    precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....42-47.
   24 hr trend......1 degree cooler.
Max humidity........81-87 percent.
   24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northeast around 10 mph until 2400, then
                    southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then
                    southwest.
Mixing Height.......1000-3000 ft agl until 2400, then 400-600 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
   24 hr trend......5 degrees warmer.
Min humidity........45-51 percent.
   24 hr trend......15 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 5 mph until 1200, then
                    southeast.
Chc of wetting rain.Zero percent.
Transport winds.....South 5 to 10 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3000-5000 ft
                    agl.
Smoke dispersal.....Poor.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Lows around 50. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.

$$

WYZ285-202215-
South Bighorn Mountains-
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers early in the
                    evening. Chance of thunderstorms through the
                    day. Showers early in the evening. Some
                    thunderstorms may produce gusty winds, small
                    hail, and heavy rainfall. Chance of
                    precipitation 90 percent.
Chance of thunder...50 percent.
Max temperature.....59-64.
   24 hr trend......9 degrees cooler.
Min humidity........61-67 percent.
   24 hr trend......31 percent wetter.
20-foot winds.......Northwest winds around 10 mph with higher
                    gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.40 percent.
Transport winds.....West around 15 mph.
Mixing Height.......2600-4200 ft agl.
Smoke dispersal.....Poor to fair.

.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of thunderstorms in the
                    evening. Showers through the night. Slight
                    chance of thunderstorms after midnight. Some
                    thunderstorms may produce gusty winds, small
                    hail, and heavy rainfall early in the evening.
                    Some thunderstorms may produce heavy rainfall
                    in the late evening and overnight. Chance of
                    precipitation 90 percent.
Chance of thunder...40 percent.
Min temperature.....40-45.
   24 hr trend......5 degrees cooler.
Max humidity........86-92 percent.
   24 hr trend......Unchanged.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph with gusts to
                    around 25 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.60 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......600-2200 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy. Showers likely in the morning.
                    Slight chance of thunderstorms through the day.
                    Chance of showers in the afternoon. Some
                    thunderstorms may produce heavy rainfall in the
                    late morning and afternoon. Chance of
                    precipitation 70 percent.
Chance of thunder...20 percent.
Max temperature.....51-56.
   24 hr trend......8 degrees cooler.
Min humidity........72-78 percent.
   24 hr trend......8 percent wetter.
20-foot winds.......Northwest winds around 10 mph with higher
                    gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.35 percent until 1200, then 20 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Slight chance of showers and thunderstorms
                    early in the evening. Chance of precipitation
                    20 percent.
Chance of thunder...10 percent.
Min temperature.....39-44.
   24 hr trend......2 degrees cooler.
Max humidity........82-88 percent.
   24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
   24 hr trend......7 degrees warmer.
Min humidity........48-54 percent.
   24 hr trend......22 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5200 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the mid 40s. Winds generally less
than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the upper 60s. Southwest
winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
West winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 70s. South winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear. Lows in the lower 50s.
Highs 69 to 74.

$$

WYZ281-202215-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Showers and chance of
                    thunderstorms. Some thunderstorms may produce
                    gusty winds, small hail, and heavy rainfall.
                    Chance of precipitation near 100 percent.
Chance of thunder...50 percent.
Max temperature.....63-68.
   24 hr trend......14 degrees cooler.
Min humidity........67-73 percent.
   24 hr trend......35 percent wetter.
20-foot winds.......North winds around 10 mph with higher gusts.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.40 percent.
Transport winds.....North around 15 mph.
Mixing Height.......2400-4200 ft agl.
Smoke dispersal.....Poor.

.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
                    Showers likely and chance of thunderstorms in
                    the evening, then chance of showers and slight
                    chance of thunderstorms after midnight. Some
                    thunderstorms may produce gusty winds, small
                    hail, and heavy rainfall early in the evening.
                    Some thunderstorms may produce heavy rainfall
                    in the late evening and overnight. Chance of
                    precipitation 70 percent.
Chance of thunder...40 percent.
Min temperature.....46-51.
   24 hr trend......3 degrees cooler.
Max humidity........89-95 percent.
   24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2400, then
                    downslope/downvalley 4-7 mph. Gusts up to 20
                    mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.50 percent until 2400, then 30 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......600-2000 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
                    in the morning. Showers likely through the day.
                    Chance of thunderstorms in the afternoon. Some
                    thunderstorms may produce heavy rainfall until
                    late afternoon. Some thunderstorms may produce
                    heavy rainfall late in the afternoon. Chance of
                    precipitation 70 percent.
Chance of thunder...30 percent.
Max temperature.....54-59.
   24 hr trend......8 degrees cooler.
Min humidity........69-75 percent.
   24 hr trend......9 percent wetter.
20-foot winds.......North winds around 10 mph with gusts to around
                    25 mph.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.50 percent until 1200, then 40 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Mostly cloudy. Chance of showers early in the
                    evening. Slight chance of thunderstorms early
                    in the evening. Slight chance of showers early
                    in the evening. Chance of precipitation 50
                    percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
   24 hr trend......3 degrees cooler.
Max humidity........86-92 percent.
   24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph and gusty until 2100,
                    then downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then west.
Chc of wetting rain.Less than 5 percent.
Transport winds.....North around 10 mph.
Mixing Height.......400-1800 ft agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....60-65.
   24 hr trend......6 degrees warmer.
Min humidity........53-59 percent.
   24 hr trend......21 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
                    southeast around 10 mph until 1500, then
                    upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5400 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY THROUGH TUESDAY...Warmer. Mostly clear. Lows 47 to 52.
Highs in the upper 70s. South winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 50. Highs in the upper 70s. West winds
around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs around 80.
South winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the lower
80s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.

$$

WYZ282-202215-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Showers and chance of
                    thunderstorms. Some thunderstorms may produce
                    gusty winds, small hail, and heavy rainfall.
                    Chance of precipitation near 100 percent.
Chance of thunder...40 percent.
Max temperature.....60-65.
   24 hr trend......11 degrees cooler.
Min humidity........63-69 percent.
   24 hr trend......33 percent wetter.
20-foot winds.......Northwest winds around 15 mph with gusts to
                    around 30 mph.
Ridge top winds.....Northwest around 20 mph.
Chc of wetting rain.50 percent.
Transport winds.....Northwest around 20 mph.
Mixing Height.......2600-3600 ft agl.
Smoke dispersal.....Fair.

.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
                    in the evening. Showers likely through the
                    night. Slight chance of thunderstorms after
                    midnight. Some thunderstorms may produce gusty
                    winds, small hail, and heavy rainfall early in
                    the evening. Some thunderstorms may produce
                    heavy rainfall in the late evening and early
                    morning. Chance of precipitation 70 percent.
Chance of thunder...20 percent.
Min temperature.....40-45.
   24 hr trend......8 degrees cooler.
Max humidity........86-92 percent.
   24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
                    around 30 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.40 percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......1200-2200 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers early in the
                    morning. Slight chance of showers in the late
                    morning and afternoon. Slight chance of
                    thunderstorms in the afternoon. Patchy fog
                    early in the morning. Some thunderstorms may
                    produce heavy rainfall in the afternoon. Chance
                    of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....55-60.
   24 hr trend......4 degrees cooler.
Min humidity........68-74 percent.
   24 hr trend......1 percent drier.
20-foot winds.......Northwest winds around 10 mph and gusty.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.15 percent until 1200, then 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of thunder...0 percent.
Min temperature.....38-43.
   24 hr trend......1 degree cooler.
Max humidity........81-87 percent.
   24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then
                    southwest.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
   24 hr trend......7 degrees warmer.
Min humidity........44-50 percent.
   24 hr trend......18 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....South 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 5 to 10 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3400-5200 ft
                    agl.
Smoke dispersal.....Poor.


.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the mid 40s. Winds generally less
than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers. Lows 48 to 53. Highs in the upper 70s. Winds generally
less than 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs around 80.
Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the lower
80s.
.SATURDAY...Partly cloudy. Highs in the upper 70s.

$$

WYZ275-202215-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Showers likely early in the
                    evening. Chance of thunderstorms through the
                    day. Chance of showers early in the evening.
                    Some thunderstorms may produce gusty winds,
                    small hail, and heavy rainfall. Chance of
                    precipitation 70 percent.
Chance of thunder...40 percent.
Max temperature.....57-62.
   24 hr trend......14 degrees cooler.
Min humidity........60-66 percent.
   24 hr trend......35 percent wetter.
20-foot winds.......Northwest winds around 20 mph with gusts to
                    around 35 mph.
Ridge top winds.....Northwest around 25 mph.
Chc of wetting rain.50 percent.
Transport winds.....Northwest around 25 mph.
Mixing Height.......2000-3000 ft agl.
Smoke dispersal.....Fair.

.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of showers and slight
                    chance of thunderstorms in the evening, then
                    showers likely after midnight. Some
                    thunderstorms may produce gusty winds, small
                    hail, and heavy rainfall early in the evening.
                    Some thunderstorms may produce heavy rainfall
                    late in the evening. Chance of precipitation 70
                    percent.
Chance of thunder...20 percent.
Min temperature.....40-45.
   24 hr trend......10 degrees cooler.
Max humidity........87-93 percent.
   24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds 15 to 20 mph until 0300, then
                    around 10 mph. Gusts up to 35 mph.
Ridge top winds.....Northwest 20 to 25 mph.
Chc of wetting rain.17 percent.
Transport winds.....Northwest 20 to 25 mph.
Mixing Height.......600-2000 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers through the
                    day. Slight chance of thunderstorms in the
                    afternoon. Some thunderstorms may produce heavy
                    rainfall in the afternoon. Chance of
                    precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....53-58.
   24 hr trend......2 degrees cooler.
Min humidity........69-75 percent.
   24 hr trend......4 percent drier.
20-foot winds.......Northwest winds around 10 mph with gusts to
                    around 25 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.7 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1200-3200 ft agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....38-43.
   24 hr trend......1 degree cooler.
Max humidity........82-88 percent.
   24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then south.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
   24 hr trend......6 degrees warmer.
Min humidity........47-53 percent.
   24 hr trend......16 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Southeast 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 5 to 10 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3200-4600 ft
                    agl.
Smoke dispersal.....Poor.


.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the mid 40s. Winds generally less
than 10 mph.
.TUESDAY...Warmer. Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers. Lows
around 50. Highs in the mid 70s. Winds generally less than
10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs around 80.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.

$$

WYZ276-202215-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Cloudy. Showers and chance of thunderstorms.
                    Some thunderstorms may produce gusty winds,
                    small hail, and heavy rainfall. Chance of
                    precipitation near 100 percent.
Chance of thunder...40 percent.
Max temperature.....56-61.
   24 hr trend......14 degrees cooler.
Min humidity........63-69 percent.
   24 hr trend......39 percent wetter.
20-foot winds.......North winds around 15 mph with gusts to around
                    30 mph.
Ridge top winds.....North around 20 mph.
Chc of wetting rain.70 percent.
Transport winds.....North around 20 mph.
Mixing Height.......2000-2400 ft agl.
Smoke dispersal.....Poor to fair.

.TONIGHT...
Sky/weather.........Mostly cloudy. Showers likely and slight chance
                    of thunderstorms in the evening, then chance of
                    showers after midnight. Patchy fog after
                    midnight. Areas of fog after midnight, then
                    patchy fog early in the morning. Some
                    thunderstorms may produce gusty winds, small
                    hail, and heavy rainfall early in the evening.
                    Some thunderstorms may produce heavy rainfall
                    late in the evening. Chance of precipitation 70
                    percent.
Chance of thunder...20 percent.
Min temperature.....42-47.
   24 hr trend......6 degrees cooler.
Max humidity........86-92 percent.
   24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds 10 to 15 mph with gusts to around
                    30 mph until 2400, then downslope/downvalley
                    4-7 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.27 percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......600-2000 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy. Patchy fog early in the morning.
                    Areas of fog early in the morning, then patchy
                    fog late in the morning. Chance of showers
                    through the day. Slight chance of thunderstorms
                    in the afternoon. Some thunderstorms may
                    produce heavy rainfall in the afternoon. Chance
                    of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....55-60.
   24 hr trend......Unchanged.
Min humidity........62-68 percent.
   24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200. Winds
                    north around 10 mph after 1500. Gusts up to 15
                    mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.20 percent until 1200, then 5 percent.
Transport winds.....North around 10 mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening. Chance of
                    precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....41-46.
   24 hr trend......1 degree cooler.
Max humidity........81-87 percent.
   24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
                    southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then
                    southwest.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
   24 hr trend......7 degrees warmer.
Min humidity........45-51 percent.
   24 hr trend......18 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
                    around 10 mph with higher gusts.
Ridge top winds.....Southwest around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3400-5400 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows 49 to 54. Highs in the lower 70s.
West winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the mid
70s. South winds around 10 mph.
.FRIDAY...Partly cloudy. Lows in the lower 50s. Highs in the mid
70s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.

$$

WYZ287-202215-
Owl Creek Mountains-
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Showers early in the evening.
                    Chance of thunderstorms through the day.
                    Showers likely early in the evening. Some
                    thunderstorms may produce gusty winds, small
                    hail, and heavy rainfall. Chance of
                    precipitation near 100 percent.
Chance of thunder...40 percent.
Max temperature.....58-63.
   24 hr trend......9 degrees cooler.
Min humidity........68-74 percent.
   24 hr trend......25 percent wetter.
20-foot winds.......North winds around 10 mph with higher gusts.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.60 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......2400-3200 ft agl.
Smoke dispersal.....Poor to fair.

.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
                    Slight chance of thunderstorms in the evening.
                    Showers likely through the night. Slight chance
                    of thunderstorms after midnight. Some
                    thunderstorms may produce gusty winds, small
                    hail, and heavy rainfall early in the evening.
                    Some thunderstorms may produce heavy rainfall
                    in the late evening and early morning. Chance
                    of precipitation 70 percent.
Chance of thunder...20 percent.
Min temperature.....40-45.
   24 hr trend......6 degrees cooler.
Max humidity........86-92 percent.
   24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 15 mph until 2400, then
                    downslope/downvalley 4-7 mph. Gusts up to 25
                    mph.
Ridge top winds.....North around 20 mph until 2400, then northwest
                    around 10 mph.
Chc of wetting rain.52 percent.
Transport winds.....North around 20 mph until 2400, then northwest
                    around 10 mph.
Mixing Height.......1000-2000 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Chance of showers through the day. Slight
                    chance of thunderstorms in the afternoon.
                    Patchy fog early in the morning. Some
                    thunderstorms may produce heavy rainfall in the
                    afternoon. Chance of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....51-56.
   24 hr trend......3 degrees cooler.
Min humidity........71-77 percent.
   24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.15 percent until 1200, then zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......1200-3200 ft agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Slight chance of showers and thunderstorms
                    early in the evening. Chance of precipitation
                    20 percent.
Chance of thunder...10 percent.
Min temperature.....40-45.
   24 hr trend......1 degree cooler.
Max humidity........80-86 percent.
   24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then southwest.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
   24 hr trend......6 degrees warmer.
Min humidity........53-59 percent.
   24 hr trend......15 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
                    southeast.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3200-5000 ft
                    agl.
Smoke dispersal.....Poor.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows 48 to 53. Highs around 70. Winds
generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 70s. South winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the mid
70s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.

$$

WYZ286-202215-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Showers and chance of
                    thunderstorms. Some thunderstorms may produce
                    gusty winds, small hail, and heavy rainfall.
                    Chance of precipitation near 100 percent.
Chance of thunder...40 percent.
Max temperature.....50-55.
   24 hr trend......5 degrees cooler.
Min humidity........64-70 percent.
   24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.70 percent.
Transport winds.....West around 10 mph.
Mixing Height.......2000-3200 ft agl.
Smoke dispersal.....Poor.

.TONIGHT...
Sky/weather.........Mostly cloudy. Showers and slight chance of
                    thunderstorms in the evening. Chance of showers
                    and snow showers after midnight. Patchy fog
                    late in the evening. No snow accumulation. Some
                    thunderstorms may produce gusty winds, small
                    hail, and heavy rainfall early in the evening.
                    Some thunderstorms may produce heavy rainfall
                    late in the evening. Chance of precipitation 90
                    percent.
Chance of thunder...20 percent.
Min temperature.....35-40.
   24 hr trend......4 degrees cooler.
Max humidity........83-89 percent.
   24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.30 percent until 2400, then 20 percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......600-2000 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy. Patchy fog early in the morning.
                    Chance of snow showers in the morning. Chance
                    of showers through the day. Slight chance of
                    thunderstorms in the afternoon. Some
                    thunderstorms may produce heavy rainfall in the
                    afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....49-54.
   24 hr trend......2 degrees cooler.
Min humidity........67-73 percent.
   24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.7 percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Slight chance of showers and thunderstorms
                    early in the evening. Chance of precipitation
                    20 percent.
Chance of thunder...10 percent.
Min temperature.....34-39.
   24 hr trend......1 degree cooler.
Max humidity........81-87 percent.
   24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
                    mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....56-61.
   24 hr trend......7 degrees warmer.
Min humidity........47-53 percent.
   24 hr trend......20 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then south
                    around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4200-6200 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 30s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
West winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
60s. Southwest winds around 10 mph.
.FRIDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
60s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 60s.

$$

WYZ140-202215-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Showers likely and chance of
                    thunderstorms. Some thunderstorms may produce
                    gusty winds, small hail, and heavy rainfall.
                    Chance of precipitation 70 percent.
Chance of thunder...40 percent.
Max temperature.....50-55.
   24 hr trend......3 degrees cooler.
Min humidity........68-74 percent.
   24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.55 percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......2600-3600 ft agl.
Smoke dispersal.....Poor.

.TONIGHT...
Sky/weather.........Mostly cloudy. Showers likely and slight chance
                    of thunderstorms in the evening. Chance of
                    showers after midnight. Patchy fog early in the
                    evening. Areas of fog in the late evening and
                    overnight. Some thunderstorms may produce gusty
                    winds, small hail, and heavy rainfall early in
                    the evening. Some thunderstorms may produce
                    heavy rainfall late in the evening. Chance of
                    precipitation 70 percent.
Chance of thunder...20 percent.
Min temperature.....34-39.
   24 hr trend......8 degrees cooler.
Max humidity........87-93 percent.
   24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
                    mph until 2400.
Ridge top winds.....North around 5 mph.
Chc of wetting rain.25 percent until 2400, then 5 percent.
Transport winds.....Northwest 5 to 10 mph.
Mixing Height.......600-2400 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy. Areas of fog in the morning.
                    Chance of showers early in the morning. Slight
                    chance of showers early in the morning. Slight
                    chance of showers and thunderstorms in the
                    afternoon. Some thunderstorms may produce heavy
                    rainfall in the afternoon. Chance of
                    precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....53-58.
   24 hr trend......4 degrees warmer.
Min humidity........54-60 percent.
   24 hr trend......15 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Northwest 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 5 to 10 mph.
Mixing Height.......600-2600 ft agl until 1200, then 2800-4000 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening. Chance of
                    precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....32-37.
   24 hr trend......2 degrees cooler.
Max humidity........81-87 percent.
   24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 5 mph until 2400, then
                    southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 5 mph until 2400, then south.
Mixing Height.......1000-3000 ft agl until 2400, then 400-1000 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
   24 hr trend......7 degrees warmer.
Min humidity........36-42 percent.
   24 hr trend......20 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....South around 5 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 5 to 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 30s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 30s. Highs 61 to 66.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 30s. Highs in the mid
60s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Lows around 40. Highs in the mid 60s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 60s.

$$

WYZ415-202215-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Chance of showers and
                    thunderstorms. Some thunderstorms may produce
                    gusty winds, small hail, and heavy rainfall.
                    Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....51-56.
   24 hr trend......1 degree warmer.
Min humidity........65-71 percent.
   24 hr trend......17 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.40 percent.
Transport winds.....West around 10 mph.
Mixing Height.......3000-4000 ft agl.
Smoke dispersal.....Poor.

.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
                    in the evening. Chance of showers through the
                    night. Patchy fog late in the evening. Areas of
                    fog late in the evening. Some thunderstorms may
                    produce gusty winds, small hail, and heavy
                    rainfall early in the evening. Some
                    thunderstorms may produce heavy rainfall late
                    in the evening. Chance of precipitation 50
                    percent.
Chance of thunder...20 percent.
Min temperature.....30-35.
   24 hr trend......5 degrees cooler.
Max humidity........86-92 percent.
   24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 5 to 10 mph.
Chc of wetting rain.5 percent.
Transport winds.....Northwest 5 to 10 mph.
Mixing Height.......800-2800 ft agl until 2400, then 600-800 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Partly cloudy. Areas of fog early in the
                    morning. Patchy fog late in the morning. Chance
                    of showers early in the morning. Slight chance
                    of showers and thunderstorms in the afternoon.
                    Some thunderstorms may produce heavy rainfall
                    in the afternoon. Chance of precipitation 50
                    percent.
Chance of thunder...10 percent.
Max temperature.....52-57.
   24 hr trend......1 degree warmer.
Min humidity........64-70 percent.
   24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Northwest 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......600-2400 ft agl until 1200, then 2800-4200 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....31-36.
   24 hr trend......1 degree cooler.
Max humidity........82-88 percent.
   24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North around 5 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 5 mph until 2400, then east.
Mixing Height.......800-2800 ft agl until 2400, then 400-600 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....60-65.
   24 hr trend......7 degrees warmer.
Min humidity........41-47 percent.
   24 hr trend......20 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 5 mph until 1200, then
                    southwest.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 30s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows around 40. Highs in the mid 60s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows around 40. Highs in the upper 60s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid
60s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then slight chance of showers and thunderstorms in the
afternoon. Highs in the lower 60s.

$$

WYZ416-202215-
West Wind River Mountains/East Zone Bridger Teton NF-
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers and
                    thunderstorms. Some thunderstorms may produce
                    gusty winds and small hail. Chance of
                    precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....50-55.
   24 hr trend......Unchanged.
Min humidity........55-61 percent.
   24 hr trend......17 percent drier.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.25 percent.
Transport winds.....West around 15 mph.
Mixing Height.......3000-4600 ft agl.
Smoke dispersal.....Poor to fair.

.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
                    in the evening. Chance of showers and snow
                    showers through the night. Slight chance of
                    thunderstorms after midnight. Patchy fog late
                    in the evening. Areas of fog after midnight.
                    Some thunderstorms may produce gusty winds and
                    small hail early in the evening. Some
                    thunderstorms may produce heavy rainfall after
                    midnight. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....29-34.
   24 hr trend......5 degrees cooler.
Max humidity........85-91 percent.
   24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 5 to 10 mph.
Chc of wetting rain.5 percent.
Transport winds.....Northwest 5 to 10 mph.
Mixing Height.......800-2800 ft agl until 2400, then 600-800 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Partly cloudy. Areas of fog early in the
                    morning. Patchy fog late in the morning. Slight
                    chance of showers and thunderstorms in the
                    afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....50-55.
   24 hr trend......Unchanged.
Min humidity........55-61 percent.
   24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Northwest 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3000-4400 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening. Chance of
                    precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....30-35.
   24 hr trend......Unchanged.
Max humidity........85-91 percent.
   24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
                    mph.
Ridge top winds.....Northeast 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then east.
Mixing Height.......1000-3000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....54-59.
   24 hr trend......5 degrees warmer.
Min humidity........42-48 percent.
   24 hr trend......17 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
                    southwest around 10 mph until 1500, then
                    upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 5 to 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4200-5800 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 30s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s. Highs in the upper 50s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the mid 30s. Highs in the upper
50s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 30s. Highs in the
lower 60s. Winds generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 30s. Highs 58 to 63.

$$

WYZ288-202215-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers early in the
                    evening. Chance of thunderstorms through the
                    day. Showers likely early in the evening. Some
                    thunderstorms may produce gusty winds and small
                    hail. Chance of precipitation 70 percent.
Chance of thunder...30 percent.
Max temperature.....54-59.
   24 hr trend......1 degree cooler.
Min humidity........51-57 percent.
   24 hr trend......6 percent drier.
20-foot winds.......West winds around 10 mph with gusts to around
                    25 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.30 percent.
Transport winds.....West around 15 mph.
Mixing Height.......3800-5800 ft agl.
Smoke dispersal.....Fair to good.

.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of thunderstorms and snow
                    showers likely in the evening. Showers likely
                    through the night. Chance of snow showers and
                    slight chance of thunderstorms after midnight.
                    Patchy fog late in the evening. No snow
                    accumulation. Some thunderstorms may produce
                    gusty winds and small hail early in the
                    evening. Some thunderstorms may produce heavy
                    rainfall after midnight. Chance of
                    precipitation 70 percent.
Chance of thunder...30 percent.
Min temperature.....34-39.
   24 hr trend......5 degrees cooler.
Max humidity........86-92 percent.
   24 hr trend......Unchanged.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 20
                    mph until 2400, then 10 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.30 percent until 2400, then 15 percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Partly cloudy. Patchy fog early in the morning.
                    Areas of fog early in the morning, then patchy
                    fog early in the morning. Slight chance of
                    showers in the morning. Chance of showers and
                    slight chance of thunderstorms in the
                    afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....50-55.
   24 hr trend......3 degrees cooler.
Min humidity........61-67 percent.
   24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1600-3600 ft agl.
Smoke dispersal.....Poor.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening. Chance of
                    precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....33-38.
   24 hr trend......1 degree cooler.
Max humidity........82-88 percent.
   24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
                    mph.
Ridge top winds.....Northeast around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then west.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....55-60.
   24 hr trend......5 degrees warmer.
Min humidity........45-51 percent.
   24 hr trend......18 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4000-6000 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 30s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
West winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 40s. Highs in the mid
60s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
60s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 60s.

$$

WYZ414-202215-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Chance of showers and
                    thunderstorms. Some thunderstorms may produce
                    gusty winds and small hail. Chance of
                    precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....52-57.
   24 hr trend......1 degree warmer.
Min humidity........54-60 percent.
   24 hr trend......18 percent drier.
20-foot winds.......Northwest winds around 10 mph with higher
                    gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.20 percent.
Transport winds.....West around 15 mph.
Mixing Height.......3600-5000 ft agl.
Smoke dispersal.....Poor to fair.

.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Chance of showers and slight chance of
                    thunderstorms in the evening. Slight chance of
                    showers after midnight. Areas of fog after
                    midnight. Some thunderstorms may produce gusty
                    winds and small hail early in the evening.
                    Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....28-33.
   24 hr trend......5 degrees cooler.
Max humidity........85-91 percent.
   24 hr trend......8 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Partly cloudy. Areas of fog early in the
                    morning.
Chance of thunder...0 percent.
Max temperature.....53-58.
   24 hr trend......2 degrees warmer.
Min humidity........53-59 percent.
   24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
                    northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3400-5000 ft
                    agl.
Smoke dispersal.....Poor to fair.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....28-33.
   24 hr trend......1 degree warmer.
Max humidity........81-87 percent.
   24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then
                    southeast.
Mixing Height.......1200-3200 ft agl until 2400, then 400-600 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....60-65.
   24 hr trend......6 degrees warmer.
Min humidity........34-40 percent.
   24 hr trend......16 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
                    southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
                    southwest.
Mixing Height.......1200-3200 ft agl until 1200, then 4800-6600 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 30s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly clear with slight chance of showers and
thunderstorms. Lows around 40. Highs in the lower 60s. Winds
generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 60s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Lows in the lower 40s. Highs in the
upper 60s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then slight chance of showers and thunderstorms in the
afternoon. Highs in the mid 60s.

$$

WYZ278-202215-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers and
                    thunderstorms. Some thunderstorms may produce
                    gusty winds and small hail. Chance of
                    precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....54-59.
   24 hr trend......4 degrees warmer.
Min humidity........49-55 percent.
   24 hr trend......21 percent drier.
20-foot winds.......Northwest winds around 10 mph with higher
                    gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.15 percent.
Transport winds.....West around 15 mph.
Mixing Height.......4400-6400 ft agl.
Smoke dispersal.....Fair to good.

.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Chance of showers and slight chance of
                    thunderstorms in the evening. Slight chance of
                    showers after midnight. Patchy fog after
                    midnight. Areas of fog early in the morning.
                    Some thunderstorms may produce gusty winds and
                    small hail early in the evening. Chance of
                    precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....30-35.
   24 hr trend......11 degrees cooler.
Max humidity........83-89 percent.
   24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
                    northwest around 10 mph until 2400, then
                    downslope/downvalley 4-7 mph. Gusts up to 15
                    mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-600 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Partly cloudy. Areas of fog early in the
                    morning. Patchy fog early in the morning.
Chance of thunder...0 percent.
Max temperature.....54-59.
   24 hr trend......Unchanged.
Min humidity........44-50 percent.
   24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
                    northwest around 10 mph with higher gusts.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4200-6200 ft
                    agl.
Smoke dispersal.....Poor to fair.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....31-36.
   24 hr trend......Unchanged.
Max humidity........82-88 percent.
   24 hr trend......Unchanged.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
                    mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then northeast.
Mixing Height.......1800-3800 ft agl until 2400, then 400-600 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
   24 hr trend......3 degrees warmer.
Min humidity........34-40 percent.
   24 hr trend......10 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....North around 10 mph until 1200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 1200, then
                    southwest.
Mixing Height.......800-2800 ft agl until 1200, then 3800-5600 ft
                    agl.
Smoke dispersal.....Poor.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 30s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s. Highs in the upper 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear with slight chance of showers and
thunderstorms. Lows in the mid 30s. Highs in the upper 60s. Winds
generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 30s. Highs around 70.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Lows in the upper 30s. Highs around 70.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.

$$

WYZ277-202215-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms through the day. Some
                    thunderstorms may produce gusty winds and small
                    hail. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....55-60.
   24 hr trend......4 degrees warmer.
Min humidity........44-50 percent.
   24 hr trend......26 percent drier.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......5400-6200 ft agl.
Smoke dispersal.....Good.

.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening. Areas of
                    fog early in the morning. Some thunderstorms
                    may produce gusty winds and small hail early in
                    the evening. Chance of precipitation 20
                    percent.
Chance of thunder...10 percent.
Min temperature.....29-34.
   24 hr trend......10 degrees cooler.
Max humidity........84-90 percent.
   24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2400, then
                    downslope/downvalley 4-7 mph. Gusts up to 20
                    mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Partly cloudy. Areas of fog early in the
                    morning.
Chance of thunder...0 percent.
Max temperature.....57-62.
   24 hr trend......2 degrees warmer.
Min humidity........39-45 percent.
   24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
                    around 10 mph with higher gusts.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3800-5800 ft
                    agl.
Smoke dispersal.....Poor to fair.

.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....30-35.
   24 hr trend......1 degree warmer.
Max humidity........82-88 percent.
   24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
                    mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then
                    northeast.
Mixing Height.......2000-4000 ft agl until 2400, then 400-600 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
   24 hr trend......4 degrees warmer.
Min humidity........30-36 percent.
   24 hr trend......10 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Northeast around 10 mph until 1200, then
                    southwest.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 1200, then southwest.
Mixing Height.......800-2800 ft agl until 1200, then 3400-5400 ft
                    agl.
Smoke dispersal.....Poor.


.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the upper 30s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows around 40. Highs in the upper 60s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the upper 60s.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 40s. Highs around 70.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Lows in the lower 40s. Highs in the
lower 70s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs around 70.

$$

WYZ279-202215-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Showers likely early in the
                    evening. Chance of thunderstorms through the
                    day. Chance of showers early in the evening.
                    Some thunderstorms may produce gusty winds and
                    small hail. Chance of precipitation 70 percent.
Chance of thunder...40 percent.
Max temperature.....57-62.
   24 hr trend......1 degree cooler.
Min humidity........56-62 percent.
   24 hr trend......4 percent drier.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.40 percent.
Transport winds.....West around 15 mph.
Mixing Height.......3400-5400 ft agl.
Smoke dispersal.....Fair to good.

.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
                    in the evening. Chance of showers through the
                    night. Slight chance of thunderstorms after
                    midnight. Patchy fog after midnight. Some
                    thunderstorms may produce gusty winds and small
                    hail early in the evening. Some thunderstorms
                    may produce heavy rainfall after midnight.
                    Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....37-42.
   24 hr trend......9 degrees cooler.
Max humidity........77-83 percent.
   24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.5 percent.
Transport winds.....West around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 600-800 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Partly cloudy. Patchy fog early in the morning.
Chance of thunder...0 percent.
Max temperature.....56-61.
   24 hr trend......2 degrees cooler.
Min humidity........46-52 percent.
   24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
                    around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4200-6200 ft
                    agl.
Smoke dispersal.....Poor to fair.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....37-42.
   24 hr trend......1 degree cooler.
Max humidity........76-82 percent.
   24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
                    mph.
Ridge top winds.....Northwest around 10 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then east.
Mixing Height.......2200-4200 ft agl until 2400, then 400-600 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
   24 hr trend......5 degrees warmer.
Min humidity........37-43 percent.
   24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 5 mph until 1200, then
                    southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
                    southwest.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows around 40. Winds generally
less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 40s. Highs around 70. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers. Lows in
the lower 40s. Highs in the upper 60s. Winds generally less than
10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s. Winds generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs in the
lower 70s.

$$

WYZ289-202215-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening, then chance
                    of showers and thunderstorms early in the
                    evening. Some thunderstorms may produce gusty
                    winds and small hail. Chance of precipitation
                    50 percent.
Chance of thunder...30 percent.
Max temperature.....62-67.
   24 hr trend......3 degrees cooler.
Min humidity........41-47 percent.
   24 hr trend......4 percent drier.
20-foot winds.......West winds around 10 mph with gusts to around
                    25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.10 percent.
Transport winds.....West around 15 mph.
Mixing Height.......4600-6600 ft agl.
Smoke dispersal.....Good.

.TONIGHT...
Sky/weather.........Mostly cloudy. Showers likely and chance of
                    thunderstorms in the evening, then chance of
                    showers and slight chance of thunderstorms
                    after midnight. Patchy fog early in the
                    morning. Some thunderstorms may produce gusty
                    winds and small hail early in the evening. Some
                    thunderstorms may produce heavy rainfall after
                    midnight. Chance of precipitation 70 percent.
Chance of thunder...30 percent.
Min temperature.....38-43.
   24 hr trend......9 degrees cooler.
Max humidity........87-93 percent.
   24 hr trend......6 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2400, then
                    downslope/downvalley 4-7 mph. Gusts up to 20
                    mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.32 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 800-1200 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Partly cloudy. Patchy fog early in the morning.
                    Chance of showers and slight chance of
                    thunderstorms in the morning. Slight chance of
                    showers and thunderstorms in the afternoon.
                    Some thunderstorms may produce heavy rainfall
                    in the morning. Chance of precipitation 50
                    percent.
Chance of thunder...20 percent.
Max temperature.....54-59.
   24 hr trend......8 degrees cooler.
Min humidity........51-57 percent.
   24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
                    northwest around 10 mph. Gusts up to 25 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3400-5200 ft
                    agl.
Smoke dispersal.....Poor to fair.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....37-42.
   24 hr trend......2 degrees cooler.
Max humidity........82-88 percent.
   24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 20
                    mph until 2400, then 10 mph.
Ridge top winds.....North 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-800 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming sunny.
Chance of thunder...0 percent.
Max temperature.....60-65.
   24 hr trend......6 degrees warmer.
Min humidity........35-41 percent.
   24 hr trend......17 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....South 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows around 40. Winds generally
less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers. Lows in
the mid 40s. Highs around 70. Southwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.

$$

WYZ300-202215-
Casper Mountain-
212 PM MDT Sat Sep 19 2026

.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening, then chance
                    of showers and thunderstorms early in the
                    evening. Some thunderstorms may produce gusty
                    winds and small hail. Chance of precipitation
                    40 percent.
Chance of thunder...30 percent.
Max temperature.....63-68.
   24 hr trend......6 degrees cooler.
Min humidity........50-56 percent.
   24 hr trend......10 percent wetter.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......5000-6400 ft agl.
Smoke dispersal.....Good.

.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
                    Chance of thunderstorms in the evening. Showers
                    likely through the night. Slight chance of
                    thunderstorms after midnight. Patchy fog after
                    midnight. Some thunderstorms may produce gusty
                    winds and small hail early in the evening. Some
                    thunderstorms may produce heavy rainfall after
                    midnight. Chance of precipitation 70 percent.
Chance of thunder...40 percent.
Min temperature.....40-45.
   24 hr trend......5 degrees cooler.
Max humidity........88-94 percent.
   24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
                    mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.35 percent until 2400, then 15 percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 600-1200 ft
                    agl.
Smoke dispersal.....Poor.

.SUNDAY...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
                    in the morning. Showers likely through the day.
                    Chance of thunderstorms in the afternoon. Some
                    thunderstorms may produce heavy rainfall in the
                    morning. Chance of precipitation 70 percent.
Chance of thunder...30 percent.
Max temperature.....52-57.
   24 hr trend......11 degrees cooler.
Min humidity........73-79 percent.
   24 hr trend......17 percent wetter.
20-foot winds.......West winds around 10 mph with gusts to around
                    25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.55 percent until 1200, then 35 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-2600 ft agl until 1200, then 2800-4200 ft
                    agl.
Smoke dispersal.....Poor to fair.

.SUNDAY NIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Slight chance of showers and thunderstorms
                    early in the evening. Chance of precipitation
                    20 percent.
Chance of thunder...10 percent.
Min temperature.....37-42.
   24 hr trend......3 degrees cooler.
Max humidity........84-90 percent.
   24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
                    southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......800-2800 ft agl until 2400, then 600-800 ft
                    agl.
Smoke dispersal.....Poor.

.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
   24 hr trend......7 degrees warmer.
Min humidity........47-53 percent.
   24 hr trend......24 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 5 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4200-5800 ft
                    agl.
Smoke dispersal.....Poor to fair.


.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the lower 40s. Southeast
winds around 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 40s. Highs in the
upper 60s. Southwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.SATURDAY...Mostly sunny. Highs around 70.

$$