Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
132
FNUS55 KRIW 280928
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
328 AM MDT Thu Aug 28 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Scattered to widespread showers with isolated thunderstorms are
forecast across all zones today. Shower chances ramp up around
sunrise today, continuing across zone 414 and 416 until around
1800L and across zones 415 and 140 until after midnight.
Precipitation amounts will range from 0.01" to 0.5" with the
greatest amounts expected across zones 140 and northern 415.
Relatively light westerly winds for lower elevations with higher
elevations seeing 20 to 30 mph gusts. Minimum relative humidity
values are forecast to be in the 50s across lower elevations and
above 60 percent for higher elevations. Lower relative humidity with
less widespread precipitation chances Friday and Saturday.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Scattered to widespread showers and isolated thunderstorms are
forecast across all zones today. Shower chances increase across
higher elevations after 1000L and push into lower elevations after
1200L-1300L, with amounts ranging from 0.01" to 0.5". The greatest
amounts are expected to be across high elevations of zones 276, 285,
286, and 287. Showers/thunderstorms largely dissipate after sunset
(2000L) with lingering shower potential across northern WY until
midnight. Minimum relative humidity values will largely be in the
30s across low elevations and 50s to 80s across higher elevations.
Relatively light winds except across high elevations zones and zone
283, where gusts around 25 mph are expected. Lower relative humidity
with less widespread precipitation chances Friday and Saturday.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Scattered to widespread rain showers and isolated thunderstorms are
forecast across all zones today with the greatest coverage across
zones 280, 281, 289, and 300. Shower chances increase after 1000L
across northern zones and after 1200L across southern zones.
Showers/thunderstorms largely dissipate after sunset (2000L) with
lingering showers across zones 280 and 281 until after midnight.
Westerly gusts around 25 mph will be common between 1200L and 2100L
across all zones except 281. Minimum relative humidity values will
largely be in the 30s across all zones. Lower relative humidity with
more limited precipitation chances Friday and Saturday.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-291130-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the morning, then showers
likely and chance of thunderstorms in the
afternoon. Patchy fog early in the morning.
Chance of precipitation 70 percent.
Chance of thunder...40 percent.
Max temperature.....73-78.
24 hr trend......5 degrees warmer.
Min humidity........38-44 percent.
24 hr trend......13 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms in the
evening. Slight chance of showers late in the
evening. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....51-56.
24 hr trend......1 degree cooler.
Max humidity........81-87 percent.
24 hr trend......9 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2100, then north with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph until 0300, then
southwest around 10 mph with gusts to around 15
mph.
Ridge top winds.....Northwest around 15 mph until 2400, then west.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....73-78.
24 hr trend......Unchanged.
Min humidity........42-48 percent.
24 hr trend......2 percent drier.
20-foot winds.......Northwest winds around 10 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the lower 50s. Winds generally less than
10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows around 50. Highs in the upper 70s. Winds
generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 80s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the lower 80s.
.WEDNESDAY...Cooler. Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ283-291130-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Patchy fog early in the morning.
Slight chance of showers and thunderstorms in
the morning, then chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....69-74.
24 hr trend......4 degrees warmer.
Min humidity........42-48 percent.
24 hr trend......14 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with higher gusts.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....West around 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms early
in the evening. Slight chance of showers in the
evening. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......1 degree cooler.
Max humidity........72-78 percent.
24 hr trend......17 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 15 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....72-77.
24 hr trend......2 degrees warmer.
Min humidity........41-47 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the lower 50s. Winds generally less than
10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 80s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ285-291130-
South Bighorn Mountains-
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the morning, then
showers likely and chance of thunderstorms in
the afternoon. Chance of precipitation 70
percent.
Chance of thunder...50 percent.
Max temperature.....65-70.
24 hr trend......2 degrees warmer.
Min humidity........51-57 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.5 percent until 1200, then 40 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Showers likely and slight chance
of thunderstorms in the evening, then slight
chance of showers after midnight. Chance of
precipitation 70 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......1 degree cooler.
Max humidity........80-86 percent.
24 hr trend......9 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph until 0300, then
west around 10 mph. Gusts up to 25 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.20 percent until 2400, then zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......800-2800 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Chance of showers through the
day. Slight chance of thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....66-71.
24 hr trend......Unchanged.
Min humidity........51-57 percent.
24 hr trend......2 percent drier.
20-foot winds.......Northwest winds around 10 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent until 1200, then 20 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows around 50. Winds generally less than 10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the mid
70s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ281-291130-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the morning, then
showers likely and chance of thunderstorms in
the afternoon. Chance of precipitation 70
percent.
Chance of thunder...50 percent.
Max temperature.....68-73.
24 hr trend......2 degrees cooler.
Min humidity........49-55 percent.
24 hr trend......12 percent wetter.
20-foot winds.......South winds around 10 mph until 1500, then
northwest. Gusts up to 20 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.5 percent until 1200, then 35 percent.
Transport winds.....South around 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers likely and chance of thunderstorms in
the evening, then slight chance of showers and
thunderstorms after midnight. Chance of
precipitation 70 percent.
Chance of thunder...40 percent.
Min temperature.....52-57.
24 hr trend......3 degrees cooler.
Max humidity........84-90 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph with gusts to around
25 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....Northeast around 15 mph until 2400, then west.
Chc of wetting rain.45 percent until 2400, then zero percent.
Transport winds.....Northeast around 15 mph until 2400, then
northwest.
Mixing Height.......800-2800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the morning, then
showers likely and chance of thunderstorms in
the afternoon. Chance of precipitation 70
percent.
Chance of thunder...40 percent.
Max temperature.....68-73.
24 hr trend......1 degree cooler.
Min humidity........53-59 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then north
around 10 mph. Gusts up to 25 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 40 percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the lower 50s. Winds generally less than
10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SUNDAY...Clear. Lows in the lower 50s. Highs around 80. Winds
generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the
lower 80s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
.WEDNESDAY...Cooler. Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ282-291130-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the morning, then showers
likely and chance of thunderstorms in the
afternoon. Chance of precipitation 70 percent.
Chance of thunder...40 percent.
Max temperature.....68-73.
24 hr trend......2 degrees warmer.
Min humidity........44-50 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph with higher gusts.
Ridge top winds.....South around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent until 1200, then 35 percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......1400-3400 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Showers likely and slight chance
of thunderstorms in the evening. Slight chance
of showers after midnight. Chance of
precipitation 70 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......3 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....69-74.
24 hr trend......1 degree warmer.
Min humidity........42-48 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph with higher gusts.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the lower 50s. Winds generally less than
10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.SUNDAY...Clear. Lows in the lower 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the mid
80s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 80s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ275-291130-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the morning, then
showers likely and chance of thunderstorms in
the afternoon. Chance of precipitation 70
percent.
Chance of thunder...40 percent.
Max temperature.....66-71.
24 hr trend......2 degrees cooler.
Min humidity........48-54 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with higher gusts.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent until 1200, then 30 percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......1000-3000 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers likely and chance of thunderstorms in
the evening, then slight chance of showers
after midnight. Chance of precipitation 70
percent.
Chance of thunder...30 percent.
Min temperature.....48-53.
24 hr trend......3 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.20 percent until 2400, then zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Chance of showers through the
day. Slight chance of thunderstorms in the late
morning and early afternoon, then chance of
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....67-72.
24 hr trend......1 degree warmer.
Min humidity........44-50 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph with gusts to around 25 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.7 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers after midnight. Lows in the lower 50s. Northwest winds
around 10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.SUNDAY...Clear. Lows in the mid 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the mid
80s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 80s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ276-291130-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of showers and slight chance of
thunderstorms in the morning, then showers and
chance of thunderstorms in the afternoon.
Chance of precipitation 90 percent.
Chance of thunder...40 percent.
Max temperature.....66-71.
24 hr trend......3 degrees cooler.
Min humidity........50-56 percent.
24 hr trend......17 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with higher gusts.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent until 1200, then 55 percent.
Transport winds.....West around 10 mph.
Mixing Height.......2400-4400 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Showers likely and chance of
thunderstorms in the evening. Slight chance of
showers after midnight. Chance of precipitation
60 percent.
Chance of thunder...30 percent.
Min temperature.....49-54.
24 hr trend......3 degrees cooler.
Max humidity........72-78 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.15 percent until 2400, then zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning, then showers likely and chance of
thunderstorms in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...30 percent.
Max temperature.....69-74.
24 hr trend......4 degrees warmer.
Min humidity........50-56 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent until 1200, then 25 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers after midnight. Lows in the lower 50s. Winds generally
less than 10 mph.
.SATURDAY...Mostly clear with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SUNDAY THROUGH LABOR DAY...Mostly clear. Lows in the mid 50s.
Highs 77 to 82. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows around 50. Highs in the upper 70s.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ287-291130-
Owl Creek Mountains-
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the morning, then
showers likely and chance of thunderstorms in
the afternoon. Chance of precipitation 70
percent.
Chance of thunder...40 percent.
Max temperature.....65-70.
24 hr trend......3 degrees warmer.
Min humidity........46-52 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent until 1200, then 45 percent.
Transport winds.....West around 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3000-5000 ft
agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly 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.....48-53.
24 hr trend......1 degree cooler.
Max humidity........72-78 percent.
24 hr trend......11 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph and gusty until
2100, then 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.......400-2400 ft agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....65-70.
24 hr trend......1 degree warmer.
Min humidity........46-52 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....North around 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers and thunderstorms after midnight. Lows in the lower 50s.
North winds around 10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 60s.
Winds generally less than 10 mph.
.SUNDAY...Clear. Lows in the lower 50s. Highs in the mid 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
.WEDNESDAY...Partly cloudy. Chance of showers and slight chance
of thunderstorms in the afternoon. Highs around 70.
$$
WYZ286-291130-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Mostly cloudy. Showers likely and slight chance
of thunderstorms in the morning, then showers
and chance of thunderstorms in the afternoon.
Chance of precipitation 90 percent.
Chance of thunder...50 percent.
Max temperature.....57-62.
24 hr trend......2 degrees cooler.
Min humidity........60-66 percent.
24 hr trend......16 percent wetter.
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.15 percent until 1200, then 65 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1400-3400 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy. Showers likely and slight chance
of thunderstorms in the evening. Slight chance
of showers after midnight. Chance of
precipitation 70 percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......2 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......12 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning, then chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....60-65.
24 hr trend......3 degrees warmer.
Min humidity........47-53 percent.
24 hr trend......20 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.Zero percent until 1200, then 30 percent.
Transport winds.....West around 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers after midnight. Lows in the mid 40s. Winds generally less
than 10 mph.
.SATURDAY...Mostly clear 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.
.SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s. Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs around 70. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ140-291130-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Mostly cloudy. Patchy fog in the morning.
Slight chance of thunderstorms in the morning.
Showers through the day. Chance of
thunderstorms in the afternoon. Chance of
precipitation near 100 percent.
Chance of thunder...50 percent.
Max temperature.....56-61.
24 hr trend......1 degree cooler.
Min humidity........67-73 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.55 percent until 1200, then 80 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy. Showers likely and chance of
thunderstorms in the evening, then slight
chance of showers after midnight. Patchy fog
after midnight. Chance of precipitation 70
percent.
Chance of thunder...30 percent.
Min temperature.....40-45.
24 hr trend......4 degrees cooler.
Max humidity........84-90 percent.
24 hr trend......8 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.25 percent until 2400, then zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Chance of showers through the
day. Slight chance of thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....63-68.
24 hr trend......7 degrees warmer.
Min humidity........45-51 percent.
24 hr trend......30 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 until 1200, then 10 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Lows around 40. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the mid 60s. Winds
generally less than 10 mph.
.SUNDAY THROUGH LABOR DAY...Mostly clear. Lows 40 to 45. Highs
70 to 75. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 40. Highs in the lower 70s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ415-291130-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Mostly cloudy. Patchy fog early in the morning.
Showers likely and slight chance of
thunderstorms in the morning, then showers and
chance of thunderstorms in the afternoon.
Chance of precipitation 90 percent.
Chance of thunder...50 percent.
Max temperature.....58-63.
24 hr trend......1 degree warmer.
Min humidity........61-67 percent.
24 hr trend......10 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.35 percent until 1200, then 60 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then
slight chance of showers after midnight. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....40-45.
24 hr trend......4 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......15 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....62-67.
24 hr trend......5 degrees warmer.
Min humidity........48-54 percent.
24 hr trend......22 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.......1400-3400 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 40s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the lower 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the lower 40s. Highs in the
lower 70s.
$$
WYZ416-291130-
West Wind River Mountains/East Zone Bridger Teton NF-
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning. Chance of
showers and slight chance of thunderstorms in
the morning, then showers likely and chance of
thunderstorms in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...40 percent.
Max temperature.....55-60.
24 hr trend......Unchanged.
Min humidity........59-65 percent.
24 hr trend......10 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.10 percent until 1200, then 35 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1200-3200 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the evening. Slight chance of showers
in the evening. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....38-43.
24 hr trend......3 degrees cooler.
Max humidity........76-82 percent.
24 hr trend......19 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph until 0300, then
north around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of thunderstorms early in the
afternoon. Chance of showers in the afternoon.
Chance of thunderstorms late in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....60-65.
24 hr trend......5 degrees warmer.
Min humidity........42-48 percent.
24 hr trend......20 percent drier.
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.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the upper 30s. Winds generally less than
10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 40. Highs in the lower 60s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the lower 40s. Highs in the mid 60s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 40s. Highs in the
upper 60s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 40s. Highs 64 to 69.
$$
WYZ288-291130-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
in the morning. Chance of showers through the
day. Chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....60-65.
24 hr trend......2 degrees warmer.
Min humidity........57-63 percent.
24 hr trend......14 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.5 percent until 1200, then 20 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3200-5000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms early
in the evening. Slight chance of showers in the
evening. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Min temperature.....42-47.
24 hr trend......Unchanged.
Max humidity........67-73 percent.
24 hr trend......30 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph. Gusts up to 30 mph
until 2400, then 15 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....62-67.
24 hr trend......2 degrees warmer.
Min humidity........39-45 percent.
24 hr trend......11 percent drier.
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.......1800-3800 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers after midnight. Lows in the mid 40s. Winds generally less
than 10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.SUNDAY THROUGH LABOR DAY...Mostly clear. Lows 46 to 51. Highs
67 to 72. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.WEDNESDAY...Partly cloudy. Chance of showers and thunderstorms
in the afternoon. Highs in the mid 60s.
$$
WYZ414-291130-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning. Chance of
showers and slight chance of thunderstorms in
the morning, then showers and chance of
thunderstorms in the afternoon. Chance of
precipitation 90 percent.
Chance of thunder...40 percent.
Max temperature.....60-65.
24 hr trend......2 degrees warmer.
Min humidity........52-58 percent.
24 hr trend......18 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.12 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1800-3800 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the evening. Slight chance of showers
in the evening. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....38-43.
24 hr trend......2 degrees cooler.
Max humidity........79-85 percent.
24 hr trend......18 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 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.......1600-3600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....65-70.
24 hr trend......4 degrees warmer.
Min humidity........39-45 percent.
24 hr trend......13 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the lower 40s. Winds
generally less than 10 mph.
.SATURDAY THROUGH SUNDAY...Clear. Lows 42 to 47. Highs 68 to 73.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the upper 40s. Highs in the
mid 70s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs 70 to 75.
$$
WYZ277>279-291130-
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Evanston, Fort Bridger, Kemmerer,
Big Piney, Farson, Pinedale, Green River, Rock Springs,
and Wamsutter
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Patchy fog early in the morning.
Slight chance of showers in the morning. Chance
of showers late in the morning, then slight
chance of showers and thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....63-68.
24 hr trend......2 degrees warmer.
Min humidity........42-48 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
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......2 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......18 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph until 0300, then downslope/downvalley 4-7
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....66-71.
24 hr trend......2 degrees warmer.
Min humidity........39-45 percent.
24 hr trend......8 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.......1600-3600 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the mid 40s. Winds generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the mid 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ289-291130-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning, then chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....68-73.
24 hr trend......3 degrees warmer.
Min humidity........36-42 percent.
24 hr trend......16 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 20
mph until 1200, then 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....49-54.
24 hr trend......1 degree cooler.
Max humidity........72-78 percent.
24 hr trend......20 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 25 mph
until 2400, then 15 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....69-74.
24 hr trend......1 degree warmer.
Min humidity........32-38 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest around 10 mph. Gusts up to 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the upper 40s. Winds generally less than
10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SUNDAY...Clear. Lows in the upper 40s. Highs in the mid 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ300-291130-
Casper Mountain-
328 AM MDT Thu Aug 28 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the morning, then
showers likely and chance of thunderstorms in
the afternoon. Chance of precipitation 70
percent.
Chance of thunder...50 percent.
Max temperature.....68-73.
24 hr trend......5 degrees warmer.
Min humidity........44-50 percent.
24 hr trend......16 percent drier.
20-foot winds.......Southwest winds around 10 mph until 1500, then
around 15 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-5800 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the evening. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....49-54.
24 hr trend......Unchanged.
Max humidity........79-85 percent.
24 hr trend......15 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2400, then downslope/downvalley
4-7 mph until 0300, then southwest around 10
mph with gusts to around 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 30 percent.
Chance of thunder...20 percent.
Max temperature.....67-72.
24 hr trend......Unchanged.
Min humidity........46-52 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, 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 around 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers and slight
chance of thunderstorms after midnight. Lows in the upper 40s.
Winds generally less than 10 mph.
.SATURDAY...Mostly clear with chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.SUNDAY THROUGH LABOR DAY...Clear. Lows 48 to 53. Highs 70 to 75.
Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 60s.
$$