Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
206
FNUS55 KRIW 170745
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
145 AM MDT Sun Aug 17 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Another round of afternoon and early evening thunderstorms
expected Sunday between 2 and 6PM with frequent lightning and
gusty outflow winds possible over 40 mph. Otherwise, winds outside
of storm activity will remain relatively light between 10 and 20
mph with minimum relative humidity values above the 25 to 30
percent mark. Storms will end towards sunset with hot and dry
conditions to return Monday and into much of next week.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Another round of afternoon and early evening thunderstorms
expected Sunday between 3 and 10PM with frequent lightning and
gusty outflow winds possible up to 40 and 50 mph. Otherwise,
winds outside of storm activity will remain relatively light
between 10 and 20 mph with minimum relative humidity values above
the 20 to 30 percent mark. Storms will end by 10PM with hot and
dry conditions to return Monday and into much of next week.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Another round of afternoon and early evening thunderstorms
expected Sunday between 1 and 7PM with frequent lightning and
gusty outflow winds possible up to 40 and 50 mph. Otherwise, winds
outside of storm activity will remain relatively light between 15
and 25 mph with minimum relative humidity values above the 20 to
25 percent mark. Storms will end towards sunset with hot and dry
conditions to return Monday and into much of next week.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-180945-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....81-86.
24 hr trend......2 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers in the evening.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....55-60.
24 hr trend......3 degrees cooler.
Max humidity........58-64 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Good.
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.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....86-91.
24 hr trend......4 degrees warmer.
Min humidity........11-17 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 11000-13000
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the upper 50s. Highs in the lower 90s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows around 60. Highs in the mid 90s.
Southwest winds around 10 mph.
.THURSDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 80s. North
winds around 10 mph.
.FRIDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the mid 80s.
.SATURDAY...Mostly sunny. Chance of showers and thunderstorms in
the afternoon. Highs in the mid 80s.
$$
WYZ283-180945-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers late in the
morning. Isolated thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....77-82.
24 hr trend......2 degrees cooler.
Min humidity........19-25 percent.
24 hr trend......1 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.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....52-57.
24 hr trend......2 degrees cooler.
Max humidity........56-62 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......4 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......7 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.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the upper 50s. Highs in the lower 90s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows around 60. Highs in the mid 90s.
West 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 THROUGH SATURDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs in the mid
80s.
$$
WYZ285-180945-
South Bighorn Mountains-
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........22-28 percent.
24 hr trend......1 percent drier.
20-foot winds.......West 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.......2400-4400 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....53-58.
24 hr trend......2 degrees cooler.
Max humidity........56-62 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 2100, then north
until 2400, then downslope/downvalley 4-7 mph.
Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......3 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 50s. Northeast
winds around 10 mph.
.TUESDAY...Clear. Lows in the lower 60s. Highs in the mid 80s.
South winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 60s. Highs in the
upper 80s. West winds around 10 mph.
.THURSDAY...Mostly clear. Slight 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 upper 70s.
.SATURDAY...Mostly sunny. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ281-180945-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....78-83.
24 hr trend......2 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....57-62.
24 hr trend......1 degree cooler.
Max humidity........63-69 percent.
24 hr trend......2 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....North around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......4 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows around 60. Winds generally
less than 10 mph.
.TUESDAY...Clear. Lows in the lower 60s. Highs in the mid 90s.
South winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 60s. Highs in the
upper 90s. Southwest winds around 10 mph.
.THURSDAY...Not as warm. Mostly clear. Slight chance of showers
and thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
North winds around 10 mph.
.FRIDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the mid 50s. Highs in the lower 80s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 80s.
$$
WYZ282-180945-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....79-84.
24 hr trend......1 degree cooler.
Min humidity........19-25 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers in the evening.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....54-59.
24 hr trend......3 degrees cooler.
Max humidity........63-69 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West around 10 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......3 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 50s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the lower 60s. Highs in the mid 90s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 60s. Highs in the
upper 90s. Southwest winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs around 90. Northwest
winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs in the mid
80s.
$$
WYZ275-180945-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers and thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....77-82.
24 hr trend......3 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200. Winds
southwest around 10 mph after 1500. Gusts up to
15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....54-59.
24 hr trend......2 degrees cooler.
Max humidity........61-67 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......4 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph until 1500, then 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 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows around 60. Winds generally
less than 10 mph.
.TUESDAY...Warmer, clear. Lows in the lower 60s. Highs in the mid
90s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 60s. Highs in the
mid 90s. Southwest 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 with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs in the mid
80s.
$$
WYZ276-180945-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers in the morning, then scattered
showers and thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....75-80.
24 hr trend......6 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph with higher gusts until
1500, then southwest with higher gusts.
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.......2400-4400 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....54-59.
24 hr trend......2 degrees cooler.
Max humidity........56-62 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 0300, then downslope/downvalley
4-7 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.MONDAY...
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.....81-86.
24 hr trend......6 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......8 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.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 50s. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the lower 60s. Highs in the
upper 80s. South winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 60s. Highs around
90. West winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
Northwest winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Chance of showers and thunderstorms in
the afternoon. Highs around 80.
$$
WYZ287-180945-
Owl Creek Mountains-
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers late in the
morning. Isolated thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....76-81.
24 hr trend......Unchanged.
Min humidity........19-25 percent.
24 hr trend......1 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.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....53-58.
24 hr trend......3 degrees cooler.
Max humidity........55-61 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...10 percent.
Max temperature.....78-83.
24 hr trend......3 degrees warmer.
Min humidity........14-20 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.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 50s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows around 60. Highs in the upper 80s. South
winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 60s. Highs in the
upper 80s. West winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s. North
winds around 10 mph.
.FRIDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the mid 50s. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Chance of showers and thunderstorms in
the afternoon. Highs in the upper 70s.
$$
WYZ286-180945-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Scattered showers and isolated thunderstorms in
the morning, then numerous showers and
scattered thunderstorms in the afternoon.
Chance of precipitation 70 percent.
Chance of thunder...40 percent.
Max temperature.....67-72.
24 hr trend......4 degrees cooler.
Min humidity........31-37 percent.
24 hr trend......5 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 until 1200, then 15 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Scattered showers in the evening.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....47-52.
24 hr trend......Unchanged.
Max humidity........65-71 percent.
24 hr trend......3 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
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.....73-78.
24 hr trend......4 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......9 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with higher gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the lower 50s. Southwest
winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 50s.
Highs in the upper 70s. West winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. West
winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.SATURDAY...Mostly sunny. Chance of showers and thunderstorms in
the afternoon. Highs in the lower 70s.
$$
WYZ140-180945-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms late in the morning. Scattered
showers and thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....69-74.
24 hr trend......3 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Scattered showers in the evening.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....42-47.
24 hr trend......2 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......5 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......9 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.....South around 10 mph until 1200, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs around 80.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
70s. Winds generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the lower 40s. Highs in the
upper 70s.
$$
WYZ415-180945-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms late in the morning. Scattered
showers and thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....70-75.
24 hr trend......3 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Scattered showers in the evening.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......2 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......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 around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......7 degrees warmer.
Min humidity........17-23 percent.
24 hr trend......14 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.....Southwest 10 to 15 mph.
Mixing Height.......2400-4400 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......
.MONDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Lows around 50. Highs around 80. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 50. Highs in the upper
70s. 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. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ416-180945-
West Wind River Mountains/East Zone Bridger Teton NF-
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated thunderstorms in the
morning. Scattered showers through the day.
Scattered thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....65-70.
24 hr trend......3 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......Unchanged.
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 until 1200, then 10 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers in the evening.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....43-48.
24 hr trend......1 degree warmer.
Max humidity........65-71 percent.
24 hr trend......10 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West around 10 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 2400, then southeast.
Mixing Height.......1200-3200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......5 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......13 percent drier.
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.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8600-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the upper 40s. Highs in the mid 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows around 50. Highs in the mid 70s.
West winds around 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
Northwest winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ288-180945-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated thunderstorms in the
morning. Scattered showers through the day.
Scattered thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....70-75.
24 hr trend......2 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......1 degree cooler.
Max humidity........53-59 percent.
24 hr trend......6 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......4 degrees warmer.
Min humidity........17-23 percent.
24 hr trend......10 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 9200-11000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the lower 50s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the mid 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 50s. Highs around 80.
West winds around 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
West winds around 10 mph.
.FRIDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows around 50. Highs in the mid 70s.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ414-180945-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated thunderstorms in the
morning. Scattered showers through the day.
Scattered thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....70-75.
24 hr trend......3 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......1 degree cooler.
Max humidity........69-75 percent.
24 hr trend......2 percent drier.
Humidity recovery...Good.
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.....Southeast around 10 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......6 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......14 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.......3200-5200 ft agl until 1200, then 10000-12000
ft agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 40s. Winds generally
less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the lower 50s.
Highs in the lower 80s. 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. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Slight chance of showers in the
morning, then chance of showers and thunderstorms in the
afternoon. Highs in the upper 70s.
$$
WYZ277>279-180945-
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 Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers late in the
morning. Isolated thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....71-76.
24 hr trend......Unchanged.
Min humidity........24-30 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, 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.......2400-4400 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......3 degrees cooler.
Max humidity........65-71 percent.
24 hr trend......2 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then east.
Mixing Height.......3200-5200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......5 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 9400-11400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 40s. Winds generally
less than 10 mph.
.TUESDAY...Clear. Lows in the lower 50s. Highs in the mid 80s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 50s. Highs in the
upper 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 mid 80s. Winds
generally less than 10 mph.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 80s.
.SATURDAY...Mostly sunny. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the lower 80s.
$$
WYZ289-180945-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........15-21 percent.
24 hr trend......2 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.......2800-4800 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....53-58.
24 hr trend......2 degrees cooler.
Max humidity........54-60 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest 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.......3600-5600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......4 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 10600-12600
ft agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the mid 50s. Highs in the upper 80s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 50s. Highs around
90. 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. North
winds around 10 mph.
.FRIDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the lower 80s.
.SATURDAY...Mostly sunny. Chance of showers and thunderstorms in
the afternoon. Highs in the lower 80s.
$$
WYZ300-180945-
Casper Mountain-
145 AM MDT Sun Aug 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers and thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....75-80.
24 hr trend......2 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......Unchanged.
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.......3000-5000 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....53-58.
24 hr trend......2 degrees cooler.
Max humidity........50-56 percent.
24 hr trend......4 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......5 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 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 10800-12800
ft agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY...Clear. Lows in the upper 50s. Highs in the mid 80s.
Southeast winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 50s. Highs in the
upper 80s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
Northeast winds around 10 mph.
.FRIDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Chance of showers and thunderstorms in
the afternoon. Highs in the upper 70s.
$$