Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

CW8386 Thermopolis (C8386)

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

NA

59°F

15°C

Humidity 27%
Wind Speed N 10 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 25°F (-4°C)
Visibility NA
Last update 19 May 04:40 PM MDT
Extended Forecast for

4 Miles S East Thermopolis WY

Freeze Warning May 19, 09:00pm until May 20, 08:00am
Click here for hazard details and duration
Freeze Warning
  • This Afternoon

    This Afternoon: Sunny, with a high near 58. Southeast wind around 10 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 34. Breezy, with a south wind 8 to 15 mph, with gusts as high as 24 mph.

    Low: 34 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. Light and variable wind becoming northwest 5 to 9 mph in the afternoon.

    High: 67 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight.  Mostly cloudy, with a low around 40. South wind 5 to 9 mph becoming calm  after midnight.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after noon.  High near 52. Breezy, with a light north wind increasing to 12 to 17 mph in the morning. Winds could gust as high as 25 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 52 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 35. Breezy, with a north wind 11 to 16 mph becoming light and variable  after midnight. Winds could gust as high as 24 mph.

    Low: 35 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 66. Light and variable wind.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 58. Southeast wind around 10 mph.
Tonight
Mostly clear, with a low around 34. Breezy, with a south wind 8 to 15 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 67. Light and variable wind becoming northwest 5 to 9 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 40. South wind 5 to 9 mph becoming calm after midnight.
Thursday
Showers, with thunderstorms also possible after noon. High near 52. Breezy, with a light north wind increasing to 12 to 17 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 35. Breezy, with a north wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.
Friday
Mostly sunny, with a high near 66. Light and variable wind.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 52.
Memorial Day
Sunny, with a high near 86. Breezy.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S East Thermopolis WY
 43.6°N 108.22°W (Elev. 4495 ft)
3:47 pm MDT May 19, 2026
4pm MDT May 19, 2026-6pm MDT May 25, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database