Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
218
FNUS55 KRIW 220655
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
1255 AM MDT Sat Aug 22 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Monsoonal moisture will move over the area and bring cooler
temperatures and a chance of showers and thunderstorms, with the
greatest chance across the northern zones. Some locations could have
a wetting rain where more numerous showers and thunderstorms
develop. Relative humidity will remain above critical levels. Wind
should remain light to moderate except in or around any shower or
thunderstorm. Mixing and smoke dispersal will be generally fair to
good in the afternoon.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Monsoonal moisture will move over the area and bring cooler
temperatures and a chance of showers and thunderstorms, with the
greatest chance in Zones 286, 276, 287 and 288. Some locations could
have a wetting rain where more numerous showers and thunderstorms
develop. Relative humidity will remain above critical levels. Wind
should remain light to moderate except in or around any shower or
thunderstorm. Mixing and smoke dispersal will be generally fair to
good in the afternoon.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Monsoonal moisture will move over the area and bring cooler
temperatures and a chance of showers and thunderstorms. Some
locations could have a wetting rain where more numerous showers and
thunderstorms develop. Relative humidity will remain above critical
levels. Wind should remain light to moderate except in or around any
shower or thunderstorm. Mixing and smoke dispersal will be generally
fair to good in the afternoon.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-230900-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy smoke early in the morning. Slight
chance of showers and thunderstorms early in
the afternoon. Chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....85-90.
24 hr trend......6 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......16 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then east
around 10 mph with gusts to around 25 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......400-2400 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy smoke in the evening. Chance of showers
and thunderstorms in the evening, then slight
chance of showers after midnight. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....61-66.
24 hr trend......2 degrees warmer.
Max humidity........58-64 percent.
24 hr trend......4 percent drier.
Humidity recovery...Good.
20-foot winds.......Southeast winds around 15 mph until 2400, then
southwest. Gusts up to 25 mph.
Ridge top winds.....East around 20 mph until 2400, then southwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southeast around 20 mph until 2400, then
southwest.
Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Max temperature.....87-92.
24 hr trend......2 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......7 percent drier.
20-foot winds.......West winds 15 to 20 mph with gusts to around 30
mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 50s. West winds
around 10 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the mid 80s. West
winds around 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the upper 50s. Highs in the
mid 80s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Lows in the upper 50s.
Highs in the upper 80s.
$$
WYZ283-230900-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers in the late morning
and afternoon. Slight chance of thunderstorms
in the afternoon. Patchy smoke early in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....83-88.
24 hr trend......5 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then south
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North around 10 mph until 1200, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then
southwest.
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. Patchy smoke early in the
evening. Slight chance of thunderstorms in the
evening. Slight chance of showers until early
morning. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....55-60.
24 hr trend......1 degree cooler.
Max humidity........65-71 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 2100.
Southwest after 0300. Gusts up to 20 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....82-87.
24 hr trend......1 degree cooler.
Min humidity........29-35 percent.
24 hr trend......1 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.......2000-4000 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s. West winds
around 10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 50s. Highs 80 to 85.
Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 80s.
.FRIDAY...Partly cloudy. Highs in the mid 80s.
$$
WYZ285-230900-
South Bighorn Mountains-
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy smoke in the morning. Patchy smoke late
in the afternoon. Slight chance of showers late
in the morning. Slight chance of thunderstorms
early in the afternoon, then chance of showers
and thunderstorms late in the afternoon. Chance
of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....81-86.
24 hr trend......5 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......15 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.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy smoke early in the evening. Chance of
showers and thunderstorms in the evening, then
slight chance of showers after midnight. Chance
of precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....58-63.
24 hr trend......Unchanged.
Max humidity........58-64 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Good.
20-foot winds.......East winds around 10 mph until 2100, then
southeast until 2400, then southwest. Gusts up
to 25 mph.
Ridge top winds.....Southeast around 15 mph until 2400, then
southwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southeast around 15 mph until 2400, then
southwest.
Mixing Height.......2400-4400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....79-84.
24 hr trend......Unchanged.
Min humidity........26-32 percent.
24 hr trend......3 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 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.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 50s. West winds
around 10 mph.
.MONDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 50s. Highs in the upper 70s.
West winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 50s. Highs 75 to 80.
West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Lows in the upper 50s.
Highs in the upper 70s.
$$
WYZ281-230900-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Patchy smoke through the day.
Slight chance of showers late in the morning.
Slight chance of thunderstorms early in the
afternoon, then chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....82-87.
24 hr trend......5 degrees cooler.
Min humidity........33-39 percent.
24 hr trend......17 percent wetter.
20-foot winds.......Southeast winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southeast 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy smoke in the evening. Chance of showers
and thunderstorms in the evening, then slight
chance of showers and thunderstorms after
midnight. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....61-66.
24 hr trend......2 degrees warmer.
Max humidity........61-67 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southeast winds around 15 mph with gusts to
around 25 mph until 2100, then south with gusts
to around 25 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor to fair.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....84-89.
24 hr trend......2 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......8 percent drier.
20-foot winds.......Southwest winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows around 60. Winds generally
less than 10 mph.
.MONDAY THROUGH TUESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 50s. Highs 82 to 87.
North winds around 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the mid 80s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
.FRIDAY...Partly cloudy. Highs in the upper 80s.
$$
WYZ282-230900-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy smoke through the day. Slight chance of
showers early in the afternoon. Slight chance
of thunderstorms in the afternoon. Chance of
showers late in the afternoon. Chance of
precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....84-89.
24 hr trend......3 degrees cooler.
Min humidity........26-32 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast 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 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy smoke early in the
evening. Slight chance of showers and
thunderstorms until early morning. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....58-63.
24 hr trend......Unchanged.
Max humidity........58-64 percent.
24 hr trend......15 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2100, then
southwest until 2400, then west until 0300,
then downslope/downvalley 4-7 mph. Gusts up to
20 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....81-86.
24 hr trend......2 degrees cooler.
Min humidity........26-32 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph with higher gusts.
Ridge top winds.....South around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows around 60. Winds generally
less than 10 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows around 60. Highs in the mid 80s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 50s. Highs 83 to 88.
Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
.FRIDAY...Partly cloudy. Highs in the mid 80s.
$$
WYZ275-230900-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Patchy smoke through the day.
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.....81-86.
24 hr trend......4 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy smoke early in the
evening. Slight chance of showers and
thunderstorms until early morning. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....58-63.
24 hr trend......Unchanged.
Max humidity........59-65 percent.
24 hr trend......15 percent wetter.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
northwest around 10 mph until 2400, then
northeast until 0300, then downslope/downvalley
4-7 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then south.
Mixing Height.......1800-3800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....80-85.
24 hr trend......1 degree cooler.
Min humidity........27-33 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
southwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South around 10 mph until 1200, then southwest.
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 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows around 60. Winds generally
less than 10 mph.
.MONDAY...Partly cloudy. Lows in the upper 50s. Highs in the mid
80s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 50s. Highs 83 to 88.
Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
.FRIDAY...Partly cloudy. Highs in the mid 80s.
$$
WYZ276-230900-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Patchy smoke in the morning.
Slight chance of showers late in the morning.
Chance of showers late in the morning. Chance
of thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....82-87.
24 hr trend......2 degrees cooler.
Min humidity........31-37 percent.
24 hr trend......14 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.....Southwest around 10 mph until 1200, then
southeast.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms late in the
evening. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....59-64.
24 hr trend......1 degree cooler.
Max humidity........57-63 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
southwest around 10 mph. Gusts up to 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 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....83-88.
24 hr trend......1 degree warmer.
Min humidity........30-36 percent.
24 hr trend......4 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.......2000-4000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s. West winds
around 10 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs in the
lower 80s.
$$
WYZ287-230900-
Owl Creek Mountains-
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Slight chance of showers in the
late morning and early afternoon. Slight chance
of thunderstorms early in the afternoon, then
chance of showers and thunderstorms early in
the afternoon. Patchy smoke late in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....78-83.
24 hr trend......3 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph until 1500, then
southwest. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy smoke early in the
evening. Chance of showers and thunderstorms in
the evening. Chance of precipitation 40
percent.
Chance of thunder...30 percent.
Min temperature.....58-63.
24 hr trend......1 degree cooler.
Max humidity........52-58 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph with gusts to around
15 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....78-83.
24 hr trend......1 degree cooler.
Min humidity........29-35 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southwest winds around 10 mph and gusty until
0900, then upslope/upvalley 5-9 mph until 1200,
then northwest 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows around 60. West winds around
10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 70s.
.FRIDAY...Partly cloudy. Highs in the upper 70s.
$$
WYZ286-230900-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
morning, then showers likely and chance of
thunderstorms in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...40 percent.
Max temperature.....74-79.
24 hr trend......7 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......22 percent wetter.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent until 1200, then 20 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers and thunderstorms in the
evening. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....52-57.
24 hr trend......2 degrees cooler.
Max humidity........71-77 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph. Gusts up to 15 mph
until 2400, then 25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....73-78.
24 hr trend......2 degrees cooler.
Min humidity........37-43 percent.
24 hr trend......6 percent drier.
20-foot winds.......West winds 10 to 15 mph until 1500, then around
20 mph. Gusts up to 35 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. West winds
around 10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs around 70. West
winds around 10 mph.
.TUESDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs around 70. West winds
around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 40s. Highs around
70.
$$
WYZ140-230900-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
morning, then showers likely and chance of
thunderstorms in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...40 percent.
Max temperature.....75-80.
24 hr trend......8 degrees cooler.
Min humidity........48-54 percent.
24 hr trend......25 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.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers and thunderstorms in the
evening. Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Min temperature.....47-52.
24 hr trend......3 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......12 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
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.......1600-3600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
showers and thunderstorms early in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....72-77.
24 hr trend......3 degrees cooler.
Min humidity........44-50 percent.
24 hr trend......3 percent drier.
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.......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...Partly cloudy. Slight chance of showers and
thunderstorms 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 lower 70s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs around 70.
.FRIDAY...Partly cloudy. Highs in the upper 60s.
$$
WYZ415-230900-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers in the morning, then showers
likely and chance of thunderstorms in the
afternoon. Chance of precipitation 60 percent.
Chance of thunder...40 percent.
Max temperature.....74-79.
24 hr trend......9 degrees cooler.
Min humidity........46-52 percent.
24 hr trend......23 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 10 mph until 1200, then southwest.
Mixing Height.......1400-3400 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the evening. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....47-52.
24 hr trend......4 degrees cooler.
Max humidity........81-87 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Southwest around 10 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....71-76.
24 hr trend......4 degrees cooler.
Min humidity........48-54 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest 10 to 15 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.......1600-3600 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...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 40s. Winds
generally less than 10 mph.
.MONDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs around 70.
.FRIDAY...Partly cloudy. Highs in the upper 60s.
$$
WYZ416-230900-
West Wind River Mountains/East Zone Bridger Teton NF-
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Slight chance of showers early
in the morning. Chance of showers in the late
morning and afternoon. Chance of thunderstorms
in the afternoon. Patchy smoke in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....70-75.
24 hr trend......9 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......22 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.....South 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy smoke early in the
evening. Chance of showers early in the
evening. Slight chance of thunderstorms in the
evening. Slight chance of showers early in the
evening. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Min temperature.....47-52.
24 hr trend......3 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Southwest around 10 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
showers and thunderstorms early in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....67-72.
24 hr trend......3 degrees cooler.
Min humidity........43-49 percent.
24 hr trend......2 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.Less than 5 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 40s. Winds
generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Partly cloudy with chance of showers
and thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.FRIDAY...Partly cloudy. Highs in the upper 60s.
$$
WYZ288-230900-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Chance of showers through the
day. Chance of thunderstorms in the afternoon.
Patchy smoke early in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....74-79.
24 hr trend......7 degrees cooler.
Min humidity........39-45 percent.
24 hr trend......19 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.....Southwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy smoke early in the
evening. Chance of showers early in the
evening. Slight chance of thunderstorms in the
evening. Slight chance of showers early in the
evening. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Min temperature.....52-57.
24 hr trend......2 degrees cooler.
Max humidity........62-68 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph and gusty.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
showers and thunderstorms late in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....73-78.
24 hr trend......2 degrees cooler.
Min humidity........38-44 percent.
24 hr trend......1 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 20 to 25 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. West winds
around 10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows around 50. Highs in the lower 70s. West
winds around 10 mph.
.TUESDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the upper 40s. Highs around 70. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 50. Highs in the lower 70s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.FRIDAY...Partly cloudy. Highs in the lower 70s.
$$
WYZ414-230900-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers early in the morning,
then chance of showers in the late morning and
afternoon. Chance of thunderstorms in the
afternoon. Patchy smoke early in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....74-79.
24 hr trend......8 degrees cooler.
Min humidity........39-45 percent.
24 hr trend......17 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph until 1200, then southwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 10 mph until 1200, then southwest.
Mixing Height.......1800-3800 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of thunderstorms until early morning.
Slight chance of showers until early morning.
Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Min temperature.....48-53.
24 hr trend......3 degrees cooler.
Max humidity........79-85 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....West around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
showers and thunderstorms late in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....71-76.
24 hr trend......3 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 30 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Lows around 50. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.FRIDAY...Partly cloudy. Highs in the lower 70s.
$$
WYZ278-230900-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Slight chance of showers in the
morning, then chance of showers and
thunderstorms in the afternoon. Patchy smoke in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....77-82.
24 hr trend......6 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....North around 10 mph until 1200, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then
southwest.
Mixing Height.......1200-3200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy smoke early in the
evening. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....50-55.
24 hr trend......4 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......14 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph and gusty until 2100,
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.......1800-3800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the afternoon. Slight
chance of showers and thunderstorms early in
the afternoon, then chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....74-79.
24 hr trend......3 degrees cooler.
Min humidity........33-39 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 40s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 40s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
.FRIDAY...Partly cloudy. Highs in the upper 70s.
$$
WYZ277-230900-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers in the morning. Chance
of showers and thunderstorms in the afternoon.
Patchy smoke late in the morning. Chance of
precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....79-84.
24 hr trend......6 degrees cooler.
Min humidity........28-34 percent.
24 hr trend......11 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.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 10 mph until 1200, then southwest.
Mixing Height.......1200-3200 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. Slight
chance of showers and thunderstorms after
midnight. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....51-56.
24 hr trend......3 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....76-81.
24 hr trend......3 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, 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.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. Winds
generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 50. Highs around 80. Winds generally
less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Lows around 50. Highs
around 80.
$$
WYZ279-230900-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy. Slight chance of showers in the
morning, then chance of showers and
thunderstorms in the afternoon. Patchy smoke
early in the afternoon. Chance of precipitation
50 percent.
Chance of thunder...30 percent.
Max temperature.....81-86.
24 hr trend......5 degrees cooler.
Min humidity........38-44 percent.
24 hr trend......15 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.....West 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
in the evening. Slight chance of showers until
early morning. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....54-59.
24 hr trend......3 degrees cooler.
Max humidity........72-78 percent.
24 hr trend......17 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 25
mph until 2400, then 15 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
showers and thunderstorms early in the
afternoon, then slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....78-83.
24 hr trend......2 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......Unchanged.
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.......2200-4200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. Winds
generally less than 10 mph.
.MONDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows 51 to 56. Highs in the lower 80s.
Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
.FRIDAY...Partly cloudy. Highs in the lower 80s.
$$
WYZ289-230900-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers in the late morning
and afternoon. Slight chance of thunderstorms
in the afternoon. Chance of showers late in the
afternoon. Patchy smoke late in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....82-87.
24 hr trend......4 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with higher gusts.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 1200, then
southwest.
Mixing Height.......1000-3000 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy smoke early in the evening. Chance of
showers early in the evening. Slight chance of
thunderstorms in the evening. Slight chance of
showers in the late evening and early morning.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....57-62.
24 hr trend......1 degree cooler.
Max humidity........63-69 percent.
24 hr trend......12 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph and gusty.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair 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.....81-86.
24 hr trend......1 degree cooler.
Min humidity........24-30 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
west 15 to 20 mph. Gusts up to 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.......2400-4400 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs around 80.
Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Lows in the mid 50s.
Highs in the lower 80s.
$$
WYZ300-230900-
Casper Mountain-
1255 AM MDT Sat Aug 22 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers in the morning, then
chance of showers and thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....80-85.
24 hr trend......4 degrees cooler.
Min humidity........34-40 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then east
around 10 mph with higher gusts.
Ridge top winds.....Southeast around 10 mph until 1200, then east.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southeast 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers and thunderstorms in the
evening, then slight chance of showers after
midnight. Patchy smoke early in the evening.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....59-64.
24 hr trend......2 degrees warmer.
Max humidity........58-64 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southeast winds around 15 mph until 0300, then
south. Gusts up to 25 mph.
Ridge top winds.....Southeast around 20 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....South around 20 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Max temperature.....81-86.
24 hr trend......Unchanged.
Min humidity........29-35 percent.
24 hr trend......5 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
west. Gusts up to 30 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 50s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Lows in the mid 50s.
Highs around 80.
$$