Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
165
FNUS55 KRIW 260807
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
207 AM MDT Sat Sep 26 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
A weak cold front will move through the northern zones today, but
only lower temperatures by a few degrees. There is a less than 10
percent chance of a shower later this afternoon and evening.
Relative humidity will remain above critical levels. Breezy
conditions will develop this afternoon. Mixing and smoke dispersal
will be generally very good to excellent in the afternoon. Deeper
moisture moves in for Sunday and Monday with a better chance of a
wetting rain.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
A weak cold front will move into the northern zones today, but only
bring breezy conditions and small drop in temperatures for most. In
and near the mountains, there is a less than 10 percent chance of
a shower this afternoon and evening. Relative humidity will remain
above critical levels, but will drop to around 20 percent at times
this afternoon. Mixing and smoke dispersal will be generally good to
excellent in the afternoon.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
A weak cold front will move into the northern zones today, but only
bring breezy conditions and small drop in temperatures for most. In
and near the mountains, there is a less than 10 percent chance of
a shower this afternoon and evening. Relative humidity will remain
above critical levels, but will drop to around 20 percent at times
this afternoon. Mixing and smoke dispersal will be generally good to
excellent in the afternoon.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-271015-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......5 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......15 percent drier.
20-foot winds.......West winds around 10 mph with higher gusts
until 0900, then northeast with higher gusts
until 1200, then southwest with gusts to around
30 mph.
Ridge top winds.....North around 15 mph until 1200, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 1200, then southwest.
Mixing Height.......400-2200 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......3 degrees cooler.
Max humidity........55-61 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 15 mph until 2400, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 2400, then
northwest.
Mixing Height.......2200-4200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
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.....75-80.
24 hr trend......1 degree cooler.
Min humidity........25-31 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with gusts to around 25 mph.
Ridge top winds.....Northeast around 10 mph until 1200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest around 20 mph.
Mixing Height.......400-2400 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Lows in the upper 40s.
Winds generally less than 10 mph.
.MONDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs around 70. Northwest
winds around 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers. Lows in the
mid 40s. Highs in the upper 60s. Winds generally less than
10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the
lower 70s. North winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the mid 40s.
Highs in the lower 70s.
$$
WYZ283-271015-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......2 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......3 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......600-2600 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......1 degree cooler.
Max humidity........56-62 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Moderate.
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.....West 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......2 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with gusts to around 25 mph.
Ridge top winds.....East around 10 mph until 1200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest.
Mixing Height.......600-2600 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers after
midnight. Lows around 50. Winds generally less than 10 mph.
.MONDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s. Winds generally less than 10 mph.
.WEDNESDAY...Clear. Lows in the mid 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs around 70.
.FRIDAY...Partly cloudy. Highs around 70.
$$
WYZ285-271015-
South Bighorn Mountains-
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......2 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......9 percent drier.
20-foot winds.......West winds around 10 mph until 0900, then
southwest. Gusts up to 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......600-2600 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......4 degrees cooler.
Max humidity........51-57 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph with gusts to around
25 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.....Northwest 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers late in
the afternoon. Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......2 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers after midnight. Lows in the upper 40s. Winds generally
less than 10 mph.
.MONDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the lower 60s.
Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 40s.
Highs 60 to 65. North winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
60s.
.FRIDAY...Partly cloudy. Highs in the lower 60s.
$$
WYZ281-271015-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......1 degree cooler.
Min humidity........27-33 percent.
24 hr trend......4 percent drier.
20-foot winds.......North winds 10 to 15 mph until 1200, then
south. Gusts up to 30 mph.
Ridge top winds.....North around 15 mph until 1200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 1200, then south.
Mixing Height.......600-2600 ft agl until 1200, then 3000-5000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......4 degrees cooler.
Max humidity........53-59 percent.
24 hr trend......3 percent drier.
Humidity recovery...Moderate.
20-foot winds.......North winds around 10 mph with gusts to around
25 mph.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......3 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....North around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 1200, then south.
Mixing Height.......400-2000 ft agl until 1200, then 3000-5000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Lows in the upper 40s.
Winds generally less than 10 mph.
.MONDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the upper 40s.
Highs in the lower 70s. North winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs around 70.
.FRIDAY...Partly cloudy. Highs in the upper 60s.
$$
WYZ282-271015-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......1 degree warmer.
Min humidity........20-26 percent.
24 hr trend......2 percent drier.
20-foot winds.......West winds around 10 mph and gusty until 1200,
then south with gusts to around 25 mph until
1500, then southwest with gusts to around 25
mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......600-2600 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......3 degrees cooler.
Max humidity........51-57 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds around 10 mph until 2400, 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.....Northwest 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......6 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then south.
Mixing Height.......400-2000 ft agl until 1200, then 2000-4000 ft
agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Lows in the upper 40s. Winds
generally less than 10 mph.
.MONDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Clear. Lows in the upper 40s. Highs
70 to 75. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s.
.FRIDAY...Partly cloudy. Highs around 70.
$$
WYZ275-271015-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......4 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......Unchanged.
20-foot winds.......Northwest winds around 10 mph until 1200, then
upslope/upvalley 5-9 mph until 1500, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 15 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 1200, then
southwest.
Mixing Height.......400-2400 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......4 degrees cooler.
Max humidity........50-56 percent.
24 hr trend......2 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds around 10 mph and gusty.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......7 degrees cooler.
Min humidity........31-37 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Northwest winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then
southeast.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers in the
evening. Lows in the mid 40s. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs around 70.
.FRIDAY...Partly cloudy. Highs in the upper 60s.
$$
WYZ276-271015-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......4 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Northwest winds 10 to 15 mph. Gusts up to 25
mph until 1200, then 35 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.......1400-3400 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......5 degrees cooler.
Max humidity........51-57 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 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.Zero percent.
Transport winds.....Northwest 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.
.SUNDAY...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
late in the afternoon. Slight chance of showers
late in the afternoon. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Max temperature.....62-67.
24 hr trend......7 degrees cooler.
Min humidity........37-43 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 1200, then southeast.
Mixing Height.......400-2200 ft agl until 1200, then 2600-4600 ft
agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Slight chance of showers after midnight.
Lows in the mid 40s. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Showers likely and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the mid 40s. Highs in the upper 60s.
Southwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the
upper 60s. Northwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s.
.FRIDAY...Partly cloudy. Slight chance of showers in the
afternoon. Highs in the mid 60s.
$$
WYZ287-271015-
Owl Creek Mountains-
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......1 degree warmer.
Min humidity........24-30 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher gusts
until 1200, then around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......4 degrees cooler.
Max humidity........50-56 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
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 15 mph until 2400, then north.
Mixing Height.......2800-4800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......4 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 1200, then south.
Mixing Height.......400-2000 ft agl until 1200, then 3200-5200 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers after
midnight. Lows in the upper 40s. Winds generally less than
10 mph.
.MONDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 60s. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
60s. Winds generally less than 10 mph.
.WEDNESDAY...Clear. Lows in the mid 40s. Highs in the upper 60s.
Northwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
60s.
.FRIDAY...Partly cloudy. Slight chance of showers in the
afternoon. Highs in the mid 60s.
$$
WYZ286-271015-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......6 degrees cooler.
Min humidity........33-39 percent.
24 hr trend......8 percent wetter.
20-foot winds.......West winds 10 to 15 mph until 1200, then around
20 mph. Gusts up to 40 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
35 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6000-7800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....38-43.
24 hr trend......1 degree cooler.
Max humidity........61-67 percent.
24 hr trend......Unchanged.
Humidity recovery...Good.
20-foot winds.......West winds 10 to 15 mph with gusts to around 35
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West around 20 mph until 2400, then southwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then southwest
around 10 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers early in the
morning. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....56-61.
24 hr trend......Unchanged.
Min humidity........44-50 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 15 mph with gusts to around 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers in the
evening, then chance of showers and slight chance of
thunderstorms after midnight. Lows in the lower 40s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy. Showers, slight chance of thunderstorms
and snow showers. Lows in the mid 30s. Highs in the mid 50s.
Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows 36 to 41. Highs
in the upper 50s. West winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 30s. Highs in the
upper 50s.
.FRIDAY...Partly cloudy. Slight chance of showers, thunderstorms
and snow showers in the afternoon. Highs in the mid 50s.
$$
WYZ140-271015-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....55-60.
24 hr trend......11 degrees cooler.
Min humidity........36-42 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
around 20 mph. Gusts up to 35 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
30 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4600-6200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....35-40.
24 hr trend......1 degree cooler.
Max humidity........71-77 percent.
24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers early in the
morning. Slight chance of showers early in the
morning. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....59-64.
24 hr trend......4 degrees warmer.
Min humidity........40-46 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms after midnight. Lows in the upper 30s.
Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Showers likely and slight chance of
thunderstorms. Lows in the lower 30s. Highs in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 30s.
Highs in the upper 50s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 30s. Highs in the mid
50s.
.FRIDAY...Partly cloudy. Slight chance of showers, thunderstorms
and snow showers in the afternoon. Highs in the mid 50s.
$$
WYZ415-271015-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....56-61.
24 hr trend......8 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph. Gusts up to 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
30 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......Unchanged.
Max humidity........77-83 percent.
24 hr trend......Unchanged.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 15 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 2400, then
southeast.
Mixing Height.......1800-3800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......3 degrees warmer.
Min humidity........40-46 percent.
24 hr trend......1 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.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 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.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Showers likely and slight chance
of thunderstorms after midnight. Lows in the lower 40s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy. Showers likely and slight chance of
thunderstorms. Lows in the mid 30s. Highs in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the mid 30s. Highs in the upper 50s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 30s. Highs in the
upper 50s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the upper
50s.
.FRIDAY...Partly cloudy. Slight chance of showers, thunderstorms
and snow showers in the afternoon. Highs in the mid 50s.
$$
WYZ416-271015-
West Wind River Mountains/East Zone Bridger Teton NF-
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....55-60.
24 hr trend......3 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 35 mph until 1500, then around 20 mph
with gusts to around 35 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
30 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......1 degree warmer.
Max humidity........69-75 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Good.
20-foot winds.......West winds around 15 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.Zero percent.
Transport winds.....Southwest around 15 mph until 2400, then south.
Mixing Height.......2200-4200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....56-61.
24 hr trend......1 degree warmer.
Min humidity........41-47 percent.
24 hr trend......2 percent wetter.
20-foot winds.......South winds 10 to 15 mph with gusts to around
30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then showers and slight
chance of thunderstorms after midnight. Lows in the upper 30s.
Winds generally less than 10 mph.
.MONDAY...Mostly cloudy. Showers, slight chance of thunderstorms
and snow showers. Lows in the mid 30s. Highs in the lower 50s.
Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 30s. Highs in the mid
50s. Winds generally less than 10 mph.
.WEDNESDAY...Clear. Lows in the mid 30s. Highs in the mid 50s.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the mid
50s.
.FRIDAY...Partly cloudy. Highs in the mid 50s.
$$
WYZ288-271015-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....60-65.
24 hr trend......1 degree cooler.
Min humidity........36-42 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
around 20 mph. Gusts up to 35 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then around
25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 1200, then southwest
around 30 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......1 degree cooler.
Max humidity........59-65 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then southwest
around 10 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....61-66.
24 hr trend......Unchanged.
Min humidity........36-42 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph. Gusts up to 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Southwest winds
around 10 mph.
.MONDAY...Mostly cloudy with showers, slight chance of
thunderstorms and snow showers. Lows in the upper 30s. Highs in
the mid 50s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 30s. Highs in the mid
50s. Winds generally less than 10 mph.
.WEDNESDAY...Clear. Lows in the upper 30s. Highs in the upper
50s. West winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 30s. Highs in the
upper 50s.
.FRIDAY...Partly cloudy. Highs in the upper 50s.
$$
WYZ414-271015-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......4 degrees cooler.
Min humidity........36-42 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....Southwest around 10 mph until 1200, then around
20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
25 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......2 degrees warmer.
Max humidity........72-78 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
south around 10 mph. Gusts up to 25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 2400, then south.
Mixing Height.......2000-4000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......1 degree warmer.
Min humidity........34-40 percent.
24 hr trend......1 percent drier.
20-foot winds.......South winds 10 to 15 mph until 1500, then
southwest. Gusts up to 25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then showers likely and slight
chance of thunderstorms after midnight. Lows in the lower 40s.
Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Showers likely and slight chance of
thunderstorms. Lows in the upper 30s. Highs in the upper 50s.
Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 30s. Highs in the
upper 50s. Winds generally less than 10 mph.
.WEDNESDAY...Clear. Lows in the upper 30s. Highs in the upper
50s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 30s. Highs in the
upper 50s.
.FRIDAY...Partly cloudy. Highs in the upper 50s.
$$
WYZ278-271015-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......2 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 15 mph with gusts to around 30
mph.
Ridge top winds.....West around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 25
mph.
Mixing Height.......800-2800 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......1 degree warmer.
Max humidity........68-74 percent.
24 hr trend......Unchanged.
Humidity recovery...Good.
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 around 15 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then southeast.
Mixing Height.......3000-5000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......Unchanged.
Min humidity........32-38 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers and slight
chance of thunderstorms after midnight. Lows in the lower 40s.
Winds generally less than 10 mph.
.MONDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 30s. Highs in the lower
60s. Winds generally less than 10 mph.
.WEDNESDAY...Clear. Lows in the mid 30s. Highs in the mid 60s.
Northwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the mid
60s.
.FRIDAY...Partly cloudy. Highs in the mid 60s.
$$
WYZ277-271015-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......1 degree cooler.
Min humidity........26-32 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds
southwest around 20 mph with gusts to around 30
mph after 1500.
Ridge top winds.....West around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
25 mph.
Mixing Height.......800-2800 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good to excellent.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......3 degrees warmer.
Max humidity........61-67 percent.
24 hr trend......Unchanged.
Humidity recovery...Good.
20-foot winds.......West winds around 15 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.Zero percent.
Transport winds.....West around 15 mph until 2400, then south.
Mixing Height.......2800-4800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......Unchanged.
Min humidity........26-32 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers in the
evening, then chance of showers after midnight. Lows in the mid
40s. Winds generally less than 10 mph.
.MONDAY...Mostly cloudy with showers likely and slight chance of
thunderstorms. Lows around 40. Highs in the lower 60s. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 30s. Highs in the
lower 60s. Winds generally less than 10 mph.
.WEDNESDAY...Clear. Lows in the upper 30s. Highs in the lower
60s. Northwest winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the upper 30s.
Highs in the mid 60s.
$$
WYZ279-271015-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......2 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......4 percent wetter.
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.....Southwest 15 to 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......2 degrees warmer.
Max humidity........63-69 percent.
24 hr trend......4 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........33-39 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy with slight chance of showers. Lows
in the upper 40s. South winds around 10 mph.
.MONDAY...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.
.TUESDAY...Partly cloudy with slight chance of showers. Lows in
the lower 40s. Highs in the lower 60s. Winds generally less than
10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 40s. Highs in the
mid 60s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the lower 40s.
Highs in the upper 60s.
$$
WYZ289-271015-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......3 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......8 percent drier.
20-foot winds.......Southwest winds around 10 mph until 1200, then
around 20 mph. Gusts up to 30 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then around
25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......600-2600 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......1 degree warmer.
Max humidity........56-62 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 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.....Southwest 10 to 15 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......Unchanged.
Min humidity........24-30 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 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.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers after
midnight. Lows in the upper 40s. Southwest winds around 10 mph.
.MONDAY...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.
.TUESDAY...Mostly clear with slight chance of showers. Lows in
the lower 40s. Highs in the mid 60s. Winds generally less than
10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 60s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the lower 40s.
Highs in the upper 60s.
$$
WYZ300-271015-
Casper Mountain-
207 AM MDT Sat Sep 26 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......7 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......25 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.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good to excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......Unchanged.
Max humidity........52-58 percent.
24 hr trend......11 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph until 0300, then
south around 10 mph with gusts to around 15
mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......1 degree cooler.
Min humidity........29-35 percent.
24 hr trend......5 percent wetter.
20-foot winds.......South winds around 10 mph and gusty.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows around 50. South winds around
10 mph.
.MONDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers. Lows in
the lower 40s. Highs around 60. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 40s. Highs in the
mid 60s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the lower 40s.
Highs in the mid 60s.
$$