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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

CW8386 Thermopolis (C8386)

Lat: 43.64283°NLon: 108.227°WElev: 4419.52ft.

NA

64°F

18°C

Humidity 51%
Wind Speed N 4 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 45°F (7°C)
Visibility NA
Last update 28 Aug 05:10 AM MDT
Extended Forecast for

Thermopolis WY

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86. Calm wind becoming west northwest 5 to 8 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Partly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A chance of showers between midnight and 4am. Mostly cloudy, with a low around 59. North wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 30%.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Sunny, then becoming mostly cloudy during the afternoon, with a high near 83. Breezy, with a light south southwest wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 22 mph.

    High: 83 °F

    Partly Sunny
    then Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 56. West southwest wind 5 to 11 mph becoming north in the evening.

    Low: 56 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Breezy, with a southwest wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 82 °F

    Partly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51. Breezy, with a west wind 12 to 17 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.

    Low: 51 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 83. Light south southwest wind becoming west 5 to 10 mph in the afternoon.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86. Calm wind becoming west northwest 5 to 8 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers between midnight and 4am. Mostly cloudy, with a low around 59. North wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Saturday
A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Sunny, then becoming mostly cloudy during the afternoon, with a high near 83. Breezy, with a light south southwest wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 22 mph.
Saturday Night
Mostly cloudy, with a low around 56. West southwest wind 5 to 11 mph becoming north in the evening.
Sunday
A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Breezy, with a southwest wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Mostly clear, with a low around 51. Breezy, with a west wind 12 to 17 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Monday
Sunny, with a high near 83. Light south southwest wind becoming west 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Mostly sunny, with a high near 86. Breezy.
Wednesday Night
Partly cloudy, with a low around 55. Breezy.
Thursday
Mostly sunny, with a high near 84. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Thermopolis WY
 43.64°N 108.23°W (Elev. 4436 ft)
Last Update:
3:17 am MDT Aug 28, 2026
Forecast Valid:
5am MDT Aug 28, 2026-6pm MDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation