National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

CW8386 Thermopolis (C8386)

Lat: 43.642°NLon: 108.22633°WElev: 4426.0ft.

NA

58°F

14°C

Humidity 32%
Wind Speed N 20 MPH
Barometer 29.8 in (1009.14 mb)
Dewpoint 28°F (-2°C)
Visibility NA
Last update 25 Dec 02:55 PM MST
Extended Forecast for

Thermopolis WY

  • Christmas Day

    Christmas Day: Sunny, with a high near 63. West southwest wind around 14 mph, with gusts as high as 23 mph.

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 31. South wind 10 to 14 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Isolated showers after 4pm. Sunny, with a high near 54. Windy, with a south wind 17 to 22 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 20%.

    High: 54 °F

    Windy. Sunny
    then Isolated
    Showers

  • Friday Night

    Friday Night: Isolated showers between 7pm and 8pm. Mostly cloudy, with a low around 27. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Isolated
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 45. Breezy, with a south wind 9 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.

    High: 45 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of snow showers. Mostly cloudy, with a low around 10. North wind 8 to 14 mph, with gusts as high as 21 mph.

    Low: 10 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: Sunny, with a high near 29. North wind around 6 mph becoming light and variable in the morning.

    High: 29 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

Detailed Forecast

Christmas Day
Sunny, with a high near 63. West southwest wind around 14 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 31. South wind 10 to 14 mph, with gusts as high as 20 mph.
Friday
Isolated showers after 4pm. Sunny, with a high near 54. Windy, with a south wind 17 to 22 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 20%.
Friday Night
Isolated showers between 7pm and 8pm. Mostly cloudy, with a low around 27. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 45. Breezy, with a south wind 9 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around 10. North wind 8 to 14 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 29. North wind around 6 mph becoming light and variable in the morning.
Sunday Night
Mostly clear, with a low around 9.
Monday
Sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thermopolis WY
 43.64°N 108.2°W (Elev. 4400 ft)
Last Update:
2:33 pm MST Dec 25, 2025
Forecast Valid:
3pm MST Dec 25, 2025-6pm MST Dec 31, 2025
 
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Additional Resources

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Chance of Precipitation