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

Areas of Severe Thunderstorms and Excessive Rainfall; Heat Wave Builds in the Intermountain West and Plains

A slow moving front will bring rounds of strong to severe thunderstorms and heavy rainfall to the central Plains eastward to the east-central U.S.. The first widespread significant heat wave of summer for the Intermountain West and Plains is expected to develop today and expand through next week. Dangerous heat will continue to impact portions of the Southwest and Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

CW8386 Thermopolis (C8386)

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

NA

57°F

14°C

Humidity 53%
Wind Speed N 0 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 40°F (4°C)
Visibility NA
Last update 10 Jul 05:55 AM MDT
Extended Forecast for

10 Miles NNE Lysite WY

Extreme Heat Warning July 11, 12:00pm until July 13, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Sunny, with a high near 90. East wind 5 to 7 mph becoming southwest in the afternoon.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. East northeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Light and variable wind becoming west southwest 5 to 8 mph in the morning.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. West wind 5 to 8 mph becoming east in the evening.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Light south wind becoming south southeast 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. Windy, with an east southeast wind 21 to 26 mph decreasing to 11 to 16 mph. Winds could gust as high as 41 mph.

    Low: 68 °F

    Mostly Clear
    and Windy

  • Monday

    Monday: Sunny and hot, with a high near 99. East northeast wind 5 to 9 mph becoming north northwest in the morning.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. Breezy.

    Low: 66 °F

    Mostly Clear
    and Breezy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

Detailed Forecast

Today
Sunny, with a high near 90. East wind 5 to 7 mph becoming southwest in the afternoon.
Tonight
Mostly clear, with a low around 60. East northeast wind 5 to 7 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 96. Light and variable wind becoming west southwest 5 to 8 mph in the morning.
Saturday Night
Mostly clear, with a low around 64. West wind 5 to 8 mph becoming east in the evening.
Sunday
Sunny and hot, with a high near 100. Light south wind becoming south southeast 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 68. Windy, with an east southeast wind 21 to 26 mph decreasing to 11 to 16 mph. Winds could gust as high as 41 mph.
Monday
Sunny and hot, with a high near 99. East northeast wind 5 to 9 mph becoming north northwest in the morning.
Monday Night
Mostly clear, with a low around 66. Breezy.
Tuesday
Sunny and hot, with a high near 98.
Tuesday Night
Mostly clear, with a low around 65. Breezy.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 92.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Thursday
A chance of showers and thunderstorms. Sunny, with a high near 91.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNE Lysite WY
 43.38°N 107.65°W (Elev. 5600 ft)
Last Update:
6:01 am MDT Jul 10, 2026
Forecast Valid:
6am MDT Jul 10, 2026-6pm MDT Jul 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation