Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
421
FNUS55 KRIW 301002
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
402 AM MDT Sat Aug 30 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Dry conditions expected today and tonight with light winds. Skies
will be partly cloudy from cumulus clouds in zone 140 and 415 in
the afternoon. Min RH values will be in the 20s to 30s, with the
lower values occurring in zone 414.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Showers and thunderstorms are expected this afternoon, developing
in zones 286 and 288 by 1300. These storms will move into the
Bighorn and Wind River Basins through the afternoon, ending across
the area by midnight. Lightning will be the main hazard, with a
10% chance for locally heavy rain.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Showers and thunderstorms will be ending over zones 280 and 289
after sunrise this morning. Showers and thunderstorms are
expected to redevelop between 1100 and 1300 over zones 280, 281
and 285, continuing through the afternoon as they move toward the
east-southeast and end by midnight. Lightning will be the main
hazard, with a 30% chance for locally heavy rain in zone 281 near
the foothills of the Bighorns.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-311215-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the late morning and
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....69-74.
24 hr trend......3 degrees cooler.
Min humidity........37-43 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest around 10 mph until 1500, then
northeast. Gusts up to 15 mph.
Ridge top winds.....West around 15 mph until 1200, then north.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......2 degrees cooler.
Max humidity........82-88 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....East around 10 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then west.
Mixing Height.......1400-3400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......6 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......13 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows around 50. Winds generally less than
10 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the lower 50s.
Highs around 80. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. North
winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the upper 40s.
Highs 77 to 82.
$$
WYZ283-311215-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers late in the morning.
Slight chance of thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....71-76.
24 hr trend......1 degree cooler.
Min humidity........29-35 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming clear. Slight
chance of thunderstorms early in the evening.
Slight chance of showers in the evening. Chance
of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....47-52.
24 hr trend......2 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then west.
Mixing Height.......2200-4200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......3 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......6 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 northeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then north.
Mixing Height.......1400-3400 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows around 50. Winds generally less than
10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 80s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs 77 to 82.
North winds around 10 mph.
.THURSDAY...Mostly clear. Lows around 50. Highs in the upper 70s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs around 80.
$$
WYZ285-311215-
South Bighorn Mountains-
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers. Slight
chance of thunderstorms in the late morning and
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....65-70.
24 hr trend......1 degree cooler.
Min humidity........43-49 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Northwest winds 10 to 15 mph until 1500, then
north. Gusts up to 20 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the evening. Slight chance of showers
early in the evening. Chance of precipitation
20 percent.
Chance of thunder...20 percent.
Min temperature.....47-52.
24 hr trend......1 degree cooler.
Max humidity........71-77 percent.
24 hr trend......11 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
west around 10 mph. Gusts up to 20 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.......1600-3600 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......4 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the lower 50s. Winds generally
less than 10 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the lower 50s.
Highs in the mid 70s. North winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
North winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the upper 40s.
Highs 70 to 75.
$$
WYZ281-311215-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers and thunderstorms in
the morning. Chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........48-54 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent until 1200, then 20 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 3400-5400 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....49-54.
24 hr trend......2 degrees cooler.
Max humidity........82-88 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then west.
Mixing Height.......1200-3200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......7 degrees warmer.
Min humidity........29-35 percent.
24 hr trend......16 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph with higher gusts.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the lower 50s. Winds generally
less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 80s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs around 80. Northwest
winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. North
winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the upper 40s.
Highs in the upper 70s.
$$
WYZ282-311215-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms in
the late morning and afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....69-74.
24 hr trend......1 degree cooler.
Min humidity........32-38 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph with higher gusts.
Ridge top winds.....Northwest around 5 mph until 1200, then north
around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 5 mph until 1200, then north
around 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....47-52.
24 hr trend......3 degrees cooler.
Max humidity........70-76 percent.
24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then
southwest.
Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SUNDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......4 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then north.
Mixing Height.......1600-3600 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the lower 50s. Winds generally
less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the mid
80s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 51 to 56. Highs 80 to 85.
Northwest winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the lower 50s.
Highs in the lower 80s.
$$
WYZ275-311215-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers through
the day. Slight chance of thunderstorms in the
late morning and afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....67-72.
24 hr trend......Unchanged.
Min humidity........37-43 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....47-52.
24 hr trend......2 degrees cooler.
Max humidity........70-76 percent.
24 hr trend......9 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then west.
Mixing Height.......2800-4800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......4 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph with higher gusts.
Ridge top winds.....South around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then north.
Mixing Height.......1400-3400 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the mid 50s. Winds generally less
than 10 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the mid 50s.
Highs in the mid 80s. North winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs around 80. North
winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the lower 50s.
Highs in the lower 80s.
$$
WYZ276-311215-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the late morning
and afternoon. Slight chance of thunderstorms
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......1 degree cooler.
Min humidity........33-39 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming clear. Slight
chance of showers and thunderstorms early in
the evening. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Min temperature.....49-54.
24 hr trend......1 degree warmer.
Max humidity........61-67 percent.
24 hr trend......11 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph until 0300,
then west around 10 mph.
Ridge top winds.....North around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then west.
Mixing Height.......2000-4000 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......5 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......12 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then north.
Mixing Height.......2000-4000 ft agl until 1200, then 6600-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s. Winds
generally less than 10 mph.
.LABOR DAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 51 to 56. Highs 75 to 80.
Northwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the
upper 70s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ287-311215-
Owl Creek Mountains-
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers early in the morning.
Slight chance of thunderstorms in the
afternoon, then chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....67-72.
24 hr trend......1 degree cooler.
Min humidity........36-42 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming clear. Chance of
showers early in the evening. Slight chance of
thunderstorms early in the evening. Slight
chance of showers early in the evening. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......Unchanged.
Max humidity........64-70 percent.
24 hr trend......18 percent drier.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph and gusty until
2100, then downslope/downvalley 4-7 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....North around 10 mph until 2400, then west.
Mixing Height.......1600-3600 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......4 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then north.
Mixing Height.......1600-3600 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the lower 50s. Winds generally
less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 50 to 55. Highs 72 to 77. North
winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the mid
70s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ286-311215-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy. Haze
early in the morning. Slight chance of showers
in the morning, then chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....62-67.
24 hr trend......Unchanged.
Min humidity........34-40 percent.
24 hr trend......Unchanged.
20-foot winds.......Northwest winds around 10 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming clear. Slight
chance of showers and thunderstorms early in
the evening. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......Unchanged.
Max humidity........70-76 percent.
24 hr trend......8 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......3 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.LABOR DAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs around 70. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs 65 to 70.
Northwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ140-311215-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....66-71.
24 hr trend......2 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....38-43.
24 hr trend......Unchanged.
Max humidity........79-85 percent.
24 hr trend......10 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 10 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then east.
Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......4 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then northwest.
Mixing Height.......1400-3400 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly clear. Lows in the lower 40s. Winds
generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the lower 40s. Highs 69 to 74.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 70s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs around 70.
$$
WYZ415-311215-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Mostly sunny. Areas of smoke early in the
morning. Haze in the morning. Slight chance of
showers and thunderstorms early in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....66-71.
24 hr trend......1 degree warmer.
Min humidity........28-34 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......1 degree cooler.
Max humidity........76-82 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then
northeast.
Mixing Height.......3000-5000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......3 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....East around 5 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 5 mph until 1200, then
northwest.
Mixing Height.......1400-3400 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the lower 40s. Winds generally
less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 42 to 47. Highs in the lower 70s.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 70s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs around 70.
$$
WYZ416-311215-
West Wind River Mountains/East Zone Bridger Teton NF-
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy. Haze
until late afternoon. Slight chance of showers
early in the morning. Slight chance of
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....64-69.
24 hr trend......1 degree warmer.
Min humidity........30-36 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest 10 to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....37-42.
24 hr trend......Unchanged.
Max humidity........74-80 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......1 degree warmer.
Min humidity........29-35 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the lower 40s. Winds generally
less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 60s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 40s. Highs in the
upper 60s.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ288-311215-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy. Haze
until late afternoon. Slight chance of showers
in the morning. Chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....64-69.
24 hr trend......Unchanged.
Min humidity........31-37 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....41-46.
24 hr trend......Unchanged.
Max humidity........72-78 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......2 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph with higher gusts.
Ridge top winds.....West around 10 mph until 1200, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 60s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the upper 40s. Highs in the
upper 60s. North winds around 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 40s. Highs in the
upper 60s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ414-311215-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Sunny. Areas of smoke in the morning. Haze in
the late morning and early afternoon.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......1 degree warmer.
Min humidity........22-28 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....38-43.
24 hr trend......1 degree cooler.
Max humidity........75-81 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 15 mph until 2400, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then northeast.
Mixing Height.......2800-4800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......3 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....East around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 1200, then northwest.
Mixing Height.......1400-3400 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the mid 40s. Winds generally less
than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows 44 to 49. Highs
in the lower 70s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ277>279-311215-
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
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke early in the
morning. Haze through the day. Areas of smoke
early in the afternoon.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......2 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear. Haze early in the evening.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......1 degree cooler.
Max humidity........71-77 percent.
24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......4200-6200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......1 degree warmer.
Min humidity........23-29 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the mid 40s. Winds generally less
than 10 mph.
.LABOR DAY...Clear. Lows in the upper 40s. Highs in the upper
70s. Winds generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows 45 to 50. Highs
in the upper 70s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ289-311215-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the late morning and
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........28-34 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....46-51.
24 hr trend......2 degrees cooler.
Max humidity........79-85 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......2 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5800-7600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the upper 40s. Winds generally
less than 10 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows around 50. Highs
in the upper 70s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. North
winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the upper 40s.
Highs 74 to 79.
$$
WYZ300-311215-
Casper Mountain-
402 AM MDT Sat Aug 30 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the morning. Chance of showers
and thunderstorms in the afternoon, then slight
chance of showers and thunderstorms late in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....63-68.
24 hr trend......4 degrees cooler.
Min humidity........44-50 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest around 10 mph until 1500, then north.
Gusts up to 20 mph.
Ridge top winds.....West around 15 mph until 1200, then north.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...10 percent.
Min temperature.....46-51.
24 hr trend......2 degrees cooler.
Max humidity........82-88 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph and gusty until
2400, then downslope/downvalley 4-7 mph.
Ridge top winds.....Northeast around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2400, then
northwest.
Mixing Height.......1000-3000 ft agl until 2400, then 200-400 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......5 degrees warmer.
Min humidity........33-39 percent.
24 hr trend......15 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Clear. Lows in the upper 40s. Winds generally
less than 10 mph.
.LABOR DAY...Clear. Lows in the upper 40s. Highs in the lower
70s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the upper 40s.
Highs 69 to 74.
$$