Critical Fire Weather Conditions and Severe Thunderstorms Today

Scattered severe thunderstorms are possible across portions of the northern High Plains this afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin today and the southern High Plains on Thursday. Read More >

Current conditions at

CW8386 Thermopolis (C8386)

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

NA

88°F

31°C

Humidity 23%
Wind Speed N 9 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 46°F (8°C)
Visibility NA
Heat Index85°F (29°C)
Last update 13 May 01:20 PM MDT
Extended Forecast for

13 Miles NW Arminto WY

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms after 5pm.  Mostly sunny, with a high near 83. Breezy, with a west southwest wind 11 to 16 mph increasing to 17 to 22 mph. Winds could gust as high as 44 mph.  Chance of precipitation is 10%.

    High: 83 °F

    Isolated
    T-storms and
    Breezy

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Breezy, with a west southwest wind 17 to 22 mph becoming west northwest 10 to 15 mph after midnight. Winds could gust as high as 45 mph.  Chance of precipitation is 20%.

    Low: 48 °F

    Isolated
    T-storms and
    Breezy then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 68. Windy, with a north wind 11 to 16 mph becoming west 23 to 28 mph in the morning. Winds could gust as high as 38 mph.

    High: 68 °F

    Sunny and
    Windy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43. Windy, with a west wind 20 to 25 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 37 mph.

    Low: 43 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 68. Windy, with a west wind 7 to 17 mph increasing to 18 to 28 mph in the afternoon. Winds could gust as high as 39 mph.

    High: 68 °F

    Sunny and
    Windy

  • Friday Night

    Friday Night: Mostly clear, with a low around 39. Windy, with a west wind 20 to 25 mph becoming south southeast 6 to 11 mph in the evening. Winds could gust as high as 37 mph.

    Low: 39 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67. Breezy, with an east southeast wind 7 to 12 mph becoming west 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 67 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after midnight.  Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Snow level 7400 feet. Partly sunny, with a high near 50. Chance of precipitation is 60%.

    High: 50 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms after 5pm. Mostly sunny, with a high near 83. Breezy, with a west southwest wind 11 to 16 mph increasing to 17 to 22 mph. Winds could gust as high as 44 mph. Chance of precipitation is 10%.
Tonight
Isolated showers and thunderstorms before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Breezy, with a west southwest wind 17 to 22 mph becoming west northwest 10 to 15 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 68. Windy, with a north wind 11 to 16 mph becoming west 23 to 28 mph in the morning. Winds could gust as high as 38 mph.
Thursday Night
Mostly clear, with a low around 43. Windy, with a west wind 20 to 25 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 37 mph.
Friday
Sunny, with a high near 68. Windy, with a west wind 7 to 17 mph increasing to 18 to 28 mph in the afternoon. Winds could gust as high as 39 mph.
Friday Night
Mostly clear, with a low around 39. Windy, with a west wind 20 to 25 mph becoming south southeast 6 to 11 mph in the evening. Winds could gust as high as 37 mph.
Saturday
Mostly sunny, with a high near 67. Breezy, with an east southeast wind 7 to 12 mph becoming west 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 41.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Snow level 7400 feet. Partly sunny, with a high near 50. Chance of precipitation is 60%.
Sunday Night
Rain and snow showers, becoming all snow after midnight. Some thunder is also possible. Snow level 7500 feet lowering to 6300 feet after midnight . Low around 31. Chance of precipitation is 80%.
Monday
Rain and snow showers likely. Some thunder is also possible. Snow level rising to 6900 feet in the afternoon. Partly sunny, with a high near 40.
Monday Night
A slight chance of rain and snow showers. Snow level 7300 feet lowering to 6700 feet after midnight . Mostly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NW Arminto WY
 43.32°N 107.44°W (Elev. 6276 ft)
12:32 pm MDT May 13, 2026
1pm MDT May 13, 2026-6pm MDT May 19, 2026
 
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