Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
702
FNUS55 KRIW 190745
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
145 AM MDT Tue Aug 19 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Warm temperatures and dry conditions expected Tuesday. Weak
southwest winds 5 to 10 mph and minimum relative humidity values
hovering around the 15 percent mark. Poor to fair smoke dispersal
expected. Similar conditions Wednesday but with very isolated
thunderstorm activity possible across Yellowstone and the
Absarokas (<15%). Better chances come Thursday and beyond through
the weekend.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Warm temperatures and dry conditions expected Tuesday. Relatively
weak southwest winds 10 to 20 mph and minimum relative humidity
values hovering around the 15 percent mark. Poor to fair smoke
dispersal expected. Similar conditions Wednesday with increasing
storm coverage come Thursday and beyond through the weekend.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Warm temperatures and dry conditions expected Tuesday. Relatively
weak southwest winds 10 to 20 mph and minimum relative humidity
values hovering around the 15 percent mark. Poor to fair smoke
dispersal expected. Similar conditions Wednesday with increasing
storm coverage come Thursday and beyond through the weekend.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-200945-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....90-95.
24 hr trend......4 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 11800-13800
ft agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....59-64.
24 hr trend......2 degrees warmer.
Max humidity........50-56 percent.
24 hr trend......Unchanged.
Humidity recovery...Moderate.
20-foot winds.......Southeast winds around 10 mph and gusty.
Ridge top winds.....Southeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 15 mph.
Mixing Height.......6000-8000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....93-98.
24 hr trend......4 degrees warmer.
Min humidity........7-13 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 10200-12200
ft agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly clear. Lows around 60. Northwest winds
around 10 mph.
.THURSDAY...Not as warm. Partly cloudy. Chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 80s.
Northeast winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
Northeast winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
Northeast winds around 10 mph.
.SUNDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the mid 50s. Highs around 80.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the morning, then chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ283-200945-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Sunny. Areas of smoke early in the morning.
Haze late in the morning.
Chance of thunder...0 percent.
Max temperature.....87-92.
24 hr trend......3 degrees warmer.
Min humidity........8-14 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, 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.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....57-62.
24 hr trend......Unchanged.
Max humidity........33-39 percent.
24 hr trend......5 percent drier.
Humidity recovery...Poor.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
south around 10 mph until 0300, then southwest.
Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......6000-8000 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....90-95.
24 hr trend......3 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Southwest winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1500, then
southwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northwest
winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 80s.
Northeast winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the mid 50s. Highs in the mid
80s. Northeast winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s. Winds
generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 50s. Highs 78 to 83.
$$
WYZ285-200945-
South Bighorn Mountains-
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......4 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......3 percent drier.
20-foot winds.......South winds around 10 mph until 0900, then
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.......4000-6000 ft agl until 1200, then 10600-12600
ft agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear. Areas of smoke early in the
evening.
Chance of thunder...0 percent.
Min temperature.....60-65.
24 hr trend......1 degree warmer.
Max humidity........37-43 percent.
24 hr trend......2 percent drier.
Humidity recovery...Poor.
20-foot winds.......Southeast winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southeast 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......4800-6800 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....87-92.
24 hr trend......3 degrees warmer.
Min humidity........8-14 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 9200-11200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. North
winds around 10 mph.
.THURSDAY...Not as warm. Mostly clear. Chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
Northeast winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs in the
mid 70s. Northeast winds around 10 mph.
.SUNDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the mid 50s. Highs in the lower 70s.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the morning, then chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ281-200945-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....89-94.
24 hr trend......5 degrees warmer.
Min humidity........12-18 percent.
24 hr trend......5 percent drier.
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 around 15 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 12000-14000
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....63-68.
24 hr trend......3 degrees warmer.
Max humidity........43-49 percent.
24 hr trend......8 percent drier.
Humidity recovery...Moderate.
20-foot winds.......South winds 10 to 15 mph and gusty.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......6000-8000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....92-97.
24 hr trend......3 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......1 percent drier.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 10400-12400
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northwest
winds around 10 mph.
.THURSDAY...Not as warm. Mostly clear. Chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the mid 80s. North
winds around 10 mph.
.FRIDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the mid 50s. Highs in the upper 70s. Northeast winds
around 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs around 80. Winds
generally less than 10 mph.
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs around 80.
.MONDAY...Partly cloudy. Chance of showers and thunderstorms in
the afternoon. Highs in the upper 70s.
$$
WYZ282-200945-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Mostly sunny. Areas of smoke through the day.
Haze early in the morning.
Chance of thunder...0 percent.
Max temperature.....86-91.
24 hr trend......5 degrees warmer.
Min humidity........8-14 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then south
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 9400-11400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly clear. Areas of smoke.
Chance of thunder...0 percent.
Min temperature.....61-66.
24 hr trend......1 degree warmer.
Max humidity........32-38 percent.
24 hr trend......7 percent drier.
Humidity recovery...Poor.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......5600-7600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....89-94.
24 hr trend......3 degrees warmer.
Min humidity........8-14 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......1600-3600 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
Northwest winds around 10 mph.
.THURSDAY THROUGH SATURDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 55 to 60. Highs 84 to 89. North
winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the upper 50s. Highs 80 to 85.
$$
WYZ275-200945-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Sunny. Areas of smoke in the late morning and
early afternoon. Haze early in the afternoon.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......5 degrees warmer.
Min humidity........8-14 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast 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.......1400-3400 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear. Areas of smoke in the late
evening and overnight.
Chance of thunder...0 percent.
Min temperature.....61-66.
24 hr trend......2 degrees warmer.
Max humidity........32-38 percent.
24 hr trend......11 percent drier.
Humidity recovery...Poor.
20-foot winds.......Southeast winds around 10 mph and gusty.
Ridge top winds.....Southeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 15 mph.
Mixing Height.......5600-7600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....87-92.
24 hr trend......2 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......2 percent wetter.
20-foot winds.......South winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1200, then south
around 10 mph until 1500, then southwest. Gusts
up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest.
Mixing Height.......1000-3000 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
Northwest winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
North winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear. Lows 54 to 59. Highs in
the mid 80s. Northwest winds around 10 mph.
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the mid 80s.
.MONDAY...Partly cloudy. Chance of showers and thunderstorms in
the afternoon. Highs in the lower 80s.
$$
WYZ276-200945-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....87-92.
24 hr trend......6 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......7 percent drier.
20-foot winds.......Southwest winds around 10 mph until 0900, then
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.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 10800-12800
ft agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Areas of smoke in the late
evening and early morning. Haze after midnight.
Chance of thunder...0 percent.
Min temperature.....61-66.
24 hr trend......3 degrees warmer.
Max humidity........22-28 percent.
24 hr trend......18 percent drier.
Humidity recovery...Poor.
20-foot winds.......South winds around 10 mph until 2400, then
southwest. Gusts up to 15 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......5800-7800 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....87-92.
24 hr trend......1 degree warmer.
Min humidity........15-21 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Southwest winds around 10 mph until 1200, then
northwest. Gusts up to 20 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 9200-11200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows around 60. West winds
around 10 mph.
.THURSDAY...Not as warm. Mostly clear. Chance of showers and
thunderstorms. Lows in the mid 50s. Highs around 80. North winds
around 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 51 to 56. Highs in the upper 70s.
North winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 50s. Highs 76 to 81.
$$
WYZ287-200945-
Owl Creek Mountains-
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Sunny. Haze early in the morning.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......4 degrees warmer.
Min humidity........8-14 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southwest winds around 10 mph until 0900, then
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.......2600-4600 ft agl until 1200, then 9400-11400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....59-64.
24 hr trend......1 degree warmer.
Max humidity........26-32 percent.
24 hr trend......10 percent drier.
Humidity recovery...Poor.
20-foot winds.......South winds around 10 mph with gusts to around
15 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......5200-7200 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......2 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 9200-11200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
Northwest winds around 10 mph.
.THURSDAY...Mostly clear. Chance of showers and thunderstorms.
Lows in the mid 50s. Highs in the lower 80s. North winds around
10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. North
winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 70s. North
winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 50s. Highs 72 to 77.
$$
WYZ286-200945-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......3 degrees warmer.
Min humidity........12-18 percent.
24 hr trend......7 percent drier.
20-foot winds.......Southwest winds around 10 mph until 0900, then
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.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear. Areas of smoke in the evening.
Haze after midnight.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......4 degrees warmer.
Max humidity........27-33 percent.
24 hr trend......17 percent drier.
Humidity recovery...Poor.
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.....Southwest around 15 mph.
Mixing Height.......4800-6800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
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.....79-84.
24 hr trend......1 degree warmer.
Min humidity........16-22 percent.
24 hr trend......5 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 50s. West winds
around 10 mph.
.THURSDAY...Mostly clear. Chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the lower 70s. Northeast winds
around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. East
winds around 10 mph.
.SATURDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the lower 70s. Winds generally
less than 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Chance of showers and
thunderstorms. Lows in the upper 40s. Highs 66 to 71.
$$
WYZ140-200945-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......2 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 8800-10800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......3 degrees warmer.
Max humidity........38-44 percent.
24 hr trend......22 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....79-84.
24 hr trend......Unchanged.
Min humidity........23-29 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 40s. Winds
generally less than 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 40s. Highs in the mid
70s. Winds generally less than 10 mph.
.SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the
upper 70s. Winds generally less than 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the mid 70s.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the morning, then chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ415-200945-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Sunny. Areas of smoke late in the afternoon.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......2 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest.
Mixing Height.......2200-4200 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Mostly clear. Areas of smoke early in the
evening.
Chance of thunder...0 percent.
Min temperature.....50-55.
24 hr trend......4 degrees warmer.
Max humidity........41-47 percent.
24 hr trend......15 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....Southeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......2 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......7 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.....South 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.......2400-4400 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 50s. Winds
generally less than 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the upper
70s. Winds generally less than 10 mph.
.SATURDAY...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.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the mid 70s.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the morning, then chance of showers and
thunderstorms in the afternoon. Highs around 70.
$$
WYZ416-200945-
West Wind River Mountains/East Zone Bridger Teton NF-
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......2 degrees warmer.
Min humidity........12-18 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph until 1200, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....50-55.
24 hr trend......3 degrees warmer.
Max humidity........28-34 percent.
24 hr trend......15 percent drier.
Humidity recovery...Poor.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph.
Mixing Height.......4200-6200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......3 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 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.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 50s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
Northwest winds around 10 mph.
.FRIDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
70s. Northwest winds around 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
Northwest winds around 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the upper 60s.
.MONDAY...Mostly cloudy. Slight chance of showers and
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon. Highs in the mid 60s.
$$
WYZ288-200945-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......3 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......5 percent drier.
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.......3200-5200 ft agl until 1200, then 9600-11600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....53-58.
24 hr trend......3 degrees warmer.
Max humidity........23-29 percent.
24 hr trend......13 percent drier.
Humidity recovery...Poor.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 15 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......4800-6800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......2 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph 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.......3000-5000 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 50s. West
winds around 10 mph.
.THURSDAY...Partly cloudy with chance of showers and
thunderstorms. Lows around 50. Highs in the mid 70s. Northwest
winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows around 50. Highs in the mid 70s.
North winds around 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the upper 40s. Highs around 70.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon. Highs in the mid 60s.
$$
WYZ414-200945-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......3 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 9400-11400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......5 degrees warmer.
Max humidity........35-41 percent.
24 hr trend......11 percent drier.
Humidity recovery...Poor.
20-foot winds.......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.....South around 10 mph.
Mixing Height.......5000-7000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......3 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......4 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.....South 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.......3000-5000 ft agl until 1200, then 10200-12200
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 50s. Winds
generally less than 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs around 80. Winds
generally less than 10 mph.
.FRIDAY...Mostly clear. Lows around 50. Highs around 80. Winds
generally less than 10 mph.
.SATURDAY...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.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the mid 70s.
.MONDAY...Partly cloudy. Chance of showers and thunderstorms in
the morning, then showers and thunderstorms likely in the
afternoon. Highs around 70.
$$
WYZ277>279-200945-
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Evanston, Fort Bridger, Kemmerer,
Big Piney, Farson, Pinedale, Green River, Rock Springs,
and Wamsutter
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......3 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 9400-11400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....50-55.
24 hr trend......1 degree warmer.
Max humidity........35-41 percent.
24 hr trend......8 percent drier.
Humidity recovery...Poor.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph.
Mixing Height.......5200-7200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......3 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......2 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.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest.
Mixing Height.......1800-3800 ft agl until 1200, then 8800-10800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. Winds
generally less than 10 mph.
.THURSDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs 82 to 87.
Winds generally less than 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the upper 70s.
.MONDAY...Partly cloudy. Chance of showers and thunderstorms in
the morning, then showers and thunderstorms likely in the
afternoon. Highs in the mid 70s.
$$
WYZ289-200945-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......2 degrees warmer.
Min humidity........7-13 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then south
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......3400-5400 ft agl until 1200, then 11200-13200
ft agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......Unchanged.
Max humidity........40-46 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph until 2400, then
southeast around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Southeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast 10 to 15 mph.
Mixing Height.......5600-7600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....87-92.
24 hr trend......4 degrees warmer.
Min humidity........7-13 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 9400-11400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. 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.
Northeast winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
Northeast winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs around 80. Northeast
winds around 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the upper 70s.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the morning, then chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ300-200945-
Casper Mountain-
145 AM MDT Tue Aug 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......4 degrees warmer.
Min humidity........12-18 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph.
Mixing Height.......4800-6800 ft agl until 1200, then 11600-13400
ft agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....59-64.
24 hr trend......1 degree warmer.
Max humidity........53-59 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southeast winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southeast 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast 20 to 25 mph.
Mixing Height.......5000-7000 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....86-91.
24 hr trend......3 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southeast winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph. Gusts up to 20 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then west.
Mixing Height.......2600-4600 ft agl until 1200, then 10600-12600
ft agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. Southeast
winds around 10 mph.
.THURSDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the mid 50s. Highs around 80. Northeast winds around
10 mph.
.FRIDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the mid 70s. East winds around
10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Chance of showers and
thunderstorms. Lows in the lower 50s. Highs 70 to 75.
$$