Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
102
FNUS55 KRIW 070929
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
329 AM MDT Sun Sep 7 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Isolated showers will be possible over zones 140/415 this morning,
with more scattered (30-40% chance) showers and storms in zone 140
through the afternoon. Additional showers and storms will develop
over 414 this afternoon and move over zones 415/416. There is a
50% chance for a wetting rain in zone 414 as a result. Wind gusts
of 35 to 45 mph will be possible with these storms. Any remaining
showers will end by midnight.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Isolated to scattered (15-30% chance) showers and thunderstorms
will occur across the Bighorn Basin and zone 286 this afternoon,
moving to the east. Wind gusts up to 45 mph from outflow
boundaries will be possible. Isolated showers will then move over
this area through the evening, ending by midnight. Fire weather
conditions will be elevated this afternoon, as RH values as low
as 20 percent will occur across the dispatch area. Northwest
winds, gusting up to 30 mph, will occur over zone 283. RH recovery
will be fair in zone 287, as well as zones 275/282 bordering the
western foothills of the Bighorns.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Showers and thunderstorms will develop over portions of zones 277,
278, 279 this afternoon. There is a 20-40% chance for a wetting
rain in far northern portions of zone 278. Wind gusts
of 35 to 45 mph will be possible with these storms. Isolated (10%
chance) showers and storms will be possible over zones 280/281. RH
values of 17-25% will occur across the dispatch area this
afternoon.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-081130-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke through the day.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....77-82.
24 hr trend......3 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 25
mph until 1200, then 15 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Areas of
smoke through the night. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....52-57.
24 hr trend......4 degrees warmer.
Max humidity........60-66 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 2100, then
west. Gusts up to 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......1 degree warmer.
Min humidity........15-21 percent.
24 hr trend......5 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the lower 50s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
South winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s. South
winds around 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 50s. Highs around 80.
Southwest winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ283-081130-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Areas of smoke through the day. Slight chance
of showers early in the morning. Slight chance
of thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....76-81.
24 hr trend......2 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West around 10 mph until 1200, then northwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Areas of
smoke through the night. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....48-53.
24 hr trend......Unchanged.
Max humidity........60-66 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then around 10
mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......1 degree warmer.
Min humidity........18-24 percent.
24 hr trend......5 percent drier.
20-foot winds.......Southwest winds around 10 mph until 0900, then
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 7600-9600 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the lower 50s. West winds
around 10 mph.
.TUESDAY THROUGH THURSDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows 48 to 53. Highs 76 to
81. Southwest winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then slight chance of showers and thunderstorms in the
afternoon. Highs in the lower 70s.
$$
WYZ285-081130-
South Bighorn Mountains-
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke through the day.
Slight chance of showers early in the
afternoon. Slight chance of thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....71-76.
24 hr trend......2 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......8 percent wetter.
20-foot winds.......West winds around 10 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Areas of
smoke through the night. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....50-55.
24 hr trend......1 degree warmer.
Max humidity........58-64 percent.
24 hr trend......20 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 0300, then
west. Gusts up to 25 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......Unchanged.
Min humidity........20-26 percent.
24 hr trend......3 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.......1600-3600 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the lower 50s. Northeast
winds around 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
Southeast winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. South
winds around 10 mph.
.THURSDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows around 50. Highs in the lower 70s. Southwest
winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the mid 60s.
$$
WYZ281-081130-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of smoke. Chance of showers early in the
afternoon. Slight chance of thunderstorms late
in the afternoon. Slight chance of showers late
in the afternoon. Chance of precipitation 50
percent.
Chance of thunder...10 percent.
Max temperature.....76-81.
24 hr trend......7 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......4 percent wetter.
20-foot winds.......South winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Areas of
smoke through the night. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....53-58.
24 hr trend......6 degrees warmer.
Max humidity........59-65 percent.
24 hr trend......14 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 25
mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........24-30 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, 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 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the lower 50s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs in the mid
80s. South winds around 10 mph.
.THURSDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
Southwest winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows around 50. Highs in the mid 70s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the lower 70s.
$$
WYZ282-081130-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Areas of smoke through the day. Slight chance
of showers and thunderstorms in the afternoon.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....74-79.
24 hr trend......1 degree warmer.
Min humidity........20-26 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west.
Mixing Height.......600-2600 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Areas of smoke through the
night.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......2 degrees warmer.
Max humidity........61-67 percent.
24 hr trend......21 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then west.
Mixing Height.......2200-4200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......2 degrees warmer.
Min humidity........17-23 percent.
24 hr trend......2 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.....South around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west.
Mixing Height.......1200-3200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the lower 50s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the mid 80s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 80s. South
winds around 10 mph.
.THURSDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
South winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the lower 70s.
$$
WYZ275-081130-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of smoke through the day. 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.....71-76.
24 hr trend......2 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 30
mph until 1500, then northwest with gusts to
around 30 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......600-2600 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
showers late in the evening. Areas of smoke
through the night. Chance of precipitation 50
percent.
Chance of thunder...10 percent.
Min temperature.....49-54.
24 hr trend......2 degrees warmer.
Max humidity........61-67 percent.
24 hr trend......23 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 2400, then
west until 0300, then downslope/downvalley 4-7
mph. Gusts up to 25 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then west.
Mixing Height.......1400-3400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......1 degree warmer.
Min humidity........20-26 percent.
24 hr trend......1 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.....South around 10 mph until 1200, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......1400-3400 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows in the mid 50s. Highs in
the lower 80s. South winds around 10 mph.
.THURSDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Southwest winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows in the upper 40s. Highs
71 to 76.
$$
WYZ276-081130-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Mostly cloudy. Areas of smoke through the day.
Chance of showers through the day. Chance of
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....74-79.
24 hr trend......Unchanged.
Min humidity........28-34 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Southwest winds around 10 mph until 1500, then
east. Gusts up to 25 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then east.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....West around 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers and thunderstorms
early in the evening. Chance of showers late in
the evening. Areas of smoke in the evening.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....50-55.
24 hr trend......1 degree cooler.
Max humidity........58-64 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2100, then
west. Gusts up to 35 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......2 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......7 percent drier.
20-foot winds.......West winds around 10 mph until 1200, then
northwest. Gusts up to 20 mph.
Ridge top winds.....West around 15 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the lower 50s. Winds
generally less than 10 mph.
.TUESDAY THROUGH THURSDAY...Mostly cloudy with chance of showers
and slight chance of thunderstorms. Lows 48 to 53. Highs 72 to
77. Winds generally less than 10 mph.
.FRIDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the upper 60s.
$$
WYZ287-081130-
Owl Creek Mountains-
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Areas of smoke through the day. 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.....72-77.
24 hr trend......1 degree warmer.
Min humidity........23-29 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then east.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Slight
chance of showers after midnight. Areas of
smoke through the night. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....50-55.
24 hr trend......1 degree cooler.
Max humidity........51-57 percent.
24 hr trend......11 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northeast winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 10 mph until 2400, then southwest.
Chc of wetting rain.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.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......2 degrees warmer.
Min humidity........17-23 percent.
24 hr trend......6 percent drier.
20-foot winds.......Southwest winds around 10 mph until 1500, then
northwest. 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.......1800-3800 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the lower 50s. Northwest
winds around 10 mph.
.TUESDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
Southwest winds around 10 mph.
.WEDNESDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 50s. Highs in the mid
70s. Southwest winds around 10 mph.
.THURSDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Southwest winds around 10 mph.
.FRIDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the mid 60s.
$$
WYZ286-081130-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Areas of smoke through the day. 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...30 percent.
Max temperature.....66-71.
24 hr trend......4 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......12 percent wetter.
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.Zero percent until 1200, then 10 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Areas of smoke in the evening. 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.....44-49.
24 hr trend......2 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
30 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....67-72.
24 hr trend......Unchanged.
Min humidity........25-31 percent.
24 hr trend......8 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the mid 40s. West winds
around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy with chance of showers
and slight chance of thunderstorms. Lows in the mid 40s. Highs in
the mid 60s. Southwest winds around 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
Southwest winds around 10 mph.
.FRIDAY...Mostly cloudy with showers and chance of thunderstorms.
Lows in the upper 30s. Highs in the mid 50s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the mid 50s.
$$
WYZ140-081130-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Areas of smoke through the day. 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.....67-72.
24 hr trend......5 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......11 percent wetter.
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.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Areas of smoke early in the evening. 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.....39-44.
24 hr trend......4 degrees cooler.
Max humidity........85-91 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 35 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....West around 15 mph until 2400, then south.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......Unchanged.
Min humidity........27-33 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows around 40. Winds generally
less than 10 mph.
.TUESDAY...Mostly cloudy with chance of showers and
thunderstorms. Lows around 40. Highs in the mid 60s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly cloudy. Chance of showers and slight chance
of thunderstorms. Lows in the upper 30s. Highs in the mid 60s.
Winds generally less than 10 mph.
.THURSDAY...Mostly cloudy with showers likely and slight chance
of thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
Winds generally less than 10 mph.
.FRIDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the mid 30s. Highs in the mid 50s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the mid 50s.
$$
WYZ415-081130-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Mostly cloudy. Areas of smoke in the morning.
Areas of smoke early in the afternoon. Slight
chance of showers and thunderstorms. Chance of
showers and thunderstorms late in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....66-71.
24 hr trend......5 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 15 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Areas of smoke early in the evening. Chance of
showers and slight chance of thunderstorms in
the evening. Chance of precipitation 50
percent.
Chance of thunder...20 percent.
Min temperature.....40-45.
24 hr trend......3 degrees cooler.
Max humidity........81-87 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 30 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 15 mph until 2400, then south.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......Unchanged.
Min humidity........28-34 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 25 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the lower 40s. Winds
generally less than 10 mph.
.TUESDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the mid
60s. Winds generally less than 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
Winds generally less than 10 mph.
.FRIDAY...Mostly cloudy. Showers likely and chance of
thunderstorms. Lows in the mid 30s. Highs in the mid 50s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the upper 50s.
$$
WYZ416-081130-
West Wind River Mountains/East Zone Bridger Teton NF-
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke in the morning.
Areas of smoke early in the afternoon. Slight
chance of showers and thunderstorms in the
morning. Chance of showers and thunderstorms in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....64-69.
24 hr trend......3 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
around 10 mph until 1200, then 15 to 20 mph.
Gusts up to 25 mph.
Ridge top winds.....West around 10 mph until 1200, then around 20
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Areas of smoke early in the
evening. 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.....39-44.
24 hr trend......2 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......5 percent drier.
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.Less than 5 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......1 degree cooler.
Min humidity........26-32 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the lower 40s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy with chance of showers
and slight chance of thunderstorms. Lows in the lower 40s. Highs
in the lower 60s. South winds around 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the upper 30s. Highs in the upper 50s.
South winds around 10 mph.
.FRIDAY...Partly cloudy. Showers likely and chance of
thunderstorms. Lows in the mid 30s. Highs in the mid 50s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the mid 50s.
$$
WYZ288-081130-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke through the day.
Slight chance of showers early in the morning.
Chance of showers and slight chance of
thunderstorms in the late morning and
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....67-72.
24 hr trend......1 degree cooler.
Min humidity........28-34 percent.
24 hr trend......6 percent wetter.
20-foot winds.......West winds 10 to 15 mph until 1200, then around
20 mph. Gusts up to 30 mph.
Ridge top winds.....West around 15 mph until 1200, then around 25
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms early in the evening. Slight
chance of showers late in the evening. Areas of
smoke early in the evening. Areas of smoke
after midnight. Chance of precipitation 50
percent.
Chance of thunder...10 percent.
Min temperature.....44-49.
24 hr trend......2 degrees cooler.
Max humidity........64-70 percent.
24 hr trend......4 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds 15 to 20 mph with gusts to around 40
mph until 2400, then around 10 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.......2200-4200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......Unchanged.
Min humidity........25-31 percent.
24 hr trend......7 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the upper 40s. West winds
around 10 mph.
.TUESDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
Southwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
Southwest winds around 10 mph.
.THURSDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
Southwest winds around 10 mph.
.FRIDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows around 40. Highs in the upper 50s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 50s.
$$
WYZ414-081130-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of smoke early in the morning. Slight
chance of showers in the morning. Showers
likely and chance of thunderstorms in the
afternoon. Chance of precipitation 70 percent.
Chance of thunder...30 percent.
Max temperature.....66-71.
24 hr trend......4 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 30 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent until 1200, then 20 percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....40-45.
24 hr trend......1 degree cooler.
Max humidity........77-83 percent.
24 hr trend......12 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.....North around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 2400, then south.
Mixing Height.......1400-3400 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......Unchanged.
Min humidity........24-30 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Slight chance of showers after
midnight. Lows in the mid 40s. Winds generally less than 10 mph.
.TUESDAY...Mostly cloudy with showers likely and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly cloudy. Chance of showers and slight chance
of thunderstorms. Lows in the lower 40s. Highs in the mid 60s.
Southeast winds around 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Showers likely and chance of
thunderstorms. Lows in the upper 30s. Highs in the upper 50s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 50s.
$$
WYZ277>279-081130-
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
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke in the morning.
Slight chance of showers in the afternoon.
Slight chance of thunderstorms in the
afternoon. Chance of showers late in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....68-73.
24 hr trend......2 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds west
around 20 mph after 1500. Gusts up to 25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......1600-3600 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.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.....41-46.
24 hr trend......3 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......1 degree warmer.
Min humidity........29-35 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....Southwest 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 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the upper 40s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows in the upper 40s. Highs
72 to 77. South winds around 10 mph.
.THURSDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the lower 40s. Highs around 70. South winds around
10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows around 40. Highs in the mid 60s.
.SATURDAY...Mostly sunny. Slight chance of showers in the
morning, then slight chance of showers and thunderstorms in the
afternoon. Highs in the mid 60s.
$$
WYZ289-081130-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke through the day.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....72-77.
24 hr trend......Unchanged.
Min humidity........21-27 percent.
24 hr trend......6 percent wetter.
20-foot winds.......West winds 10 to 15 mph until 1500, then
northwest around 20 mph. Gusts up to 30 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the evening. Slight chance of showers
early in the evening. Chance of showers late in
the evening. Areas of smoke through the night.
Chance of precipitation 50 percent.
Chance of thunder...10 percent.
Min temperature.....49-54.
24 hr trend......1 degree cooler.
Max humidity........64-70 percent.
24 hr trend......2 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds 10 to 15 mph with gusts to around 35
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......Unchanged.
Min humidity........15-21 percent.
24 hr trend......6 percent drier.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 1200, then 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows around 50. Winds generally
less than 10 mph.
.TUESDAY THROUGH THURSDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows 47 to 52. Highs 73 to
78. Southwest winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.SATURDAY...Mostly sunny. Slight chance of showers in the
morning, then slight chance of showers and thunderstorms in the
afternoon. Highs in the upper 60s.
$$
WYZ300-081130-
Casper Mountain-
329 AM MDT Sun Sep 7 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Areas of smoke early in the morning. Areas of
smoke late in the afternoon. Slight chance of
showers late in the morning. Slight chance of
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....71-76.
24 hr trend......1 degree warmer.
Min humidity........28-34 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 30
mph until 1200, then 20 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the evening. Slight chance of showers
in the evening. Areas of smoke through the
night. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....50-55.
24 hr trend......2 degrees warmer.
Max humidity........63-69 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
southwest around 10 mph. Gusts up to 25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......1 degree warmer.
Min humidity........19-25 percent.
24 hr trend......10 percent drier.
20-foot winds.......West winds around 10 mph. Gusts up to 25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows around 50. Winds generally
less than 10 mph.
.TUESDAY THROUGH THURSDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows 49 to 54. Highs 72 to 77. South
winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the mid 60s.
$$