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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

CW8386 Thermopolis (C8386)

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

NA

52°F

11°C

Humidity 36%
Wind Speed N 0 MPH
Barometer 29.75 in (1007.45 mb)
Dewpoint 26°F (-3°C)
Visibility NA
Last update 01 Jan 04:40 PM MST
Extended Forecast for

Thermopolis WY

  • New Year's Day

    New Year's Day: Mostly cloudy, with a steady temperature around 42. South wind around 5 mph.

    High: 42 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of showers between 7pm and 10pm. Mostly cloudy, with a low around 35. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 49. Light and variable wind.

    High: 49 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27. South wind 3 to 5 mph.

    Low: 27 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 51. South wind 6 to 10 mph.

    High: 51 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 32. South wind around 8 mph.

    Low: 32 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 54. South southwest wind 8 to 14 mph, with gusts as high as 20 mph.

    High: 54 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

Detailed Forecast

New Year's Day
Mostly cloudy, with a steady temperature around 42. South wind around 5 mph.
Tonight
A slight chance of showers between 7pm and 10pm. Mostly cloudy, with a low around 35. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 49. Light and variable wind.
Friday Night
Partly cloudy, with a low around 27. South wind 3 to 5 mph.
Saturday
Partly sunny, with a high near 51. South wind 6 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 32. South wind around 8 mph.
Sunday
Mostly sunny, with a high near 54. South southwest wind 8 to 14 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly 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:
3:48 pm MST Jan 1, 2026
Forecast Valid:
4pm MST Jan 1, 2026-6pm MST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation