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

Heavy Rain and Thunderstorms in the Plains; Snow in the Northern Rockies; Heavy Rain in Guam

A storm system moving over the Rockies today will bring marginal risks for excessive rainfall and severe thunderstorms from parts of New Mexico into western South Dakota. Heavy snow expected from northwestern Wyoming into southern Montana. Ongoing heavy showers and thunderstorms from Invest 96W could result in localized flash flooding, particularly in central or southern Guam early this morning. Read More >

Hazardous Weather Conditions

Current conditions at

CW8386 Thermopolis (C8386)

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

NA

44°F

7°C

Humidity 81%
Wind Speed N 0 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 38°F (3°C)
Visibility NA
Last update 15 Oct 04:11 PM MDT
Extended Forecast for

Thermopolis WY

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 52. North northeast wind around 6 mph.

    High: 52 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms. Increasing clouds, with a low around 40. North wind 6 to 9 mph. Chance of precipitation is 40%.

    Low: 40 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers, mainly before 1pm. High near 46. Northwest wind 7 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Showers

  • Thursday Night

    Thursday Night: Scattered showers, mainly before 7pm. Mostly cloudy, with a low around 33. North northwest wind around 6 mph becoming south in the evening. Chance of precipitation is 30%.

    Low: 33 °F

    Scattered
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 59. South southwest wind 5 to 7 mph becoming east in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers, mainly after midnight. Partly cloudy, with a low around 33. East northeast wind 6 to 10 mph becoming west in the evening.

    Low: 33 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 53. North northwest wind 6 to 8 mph becoming southeast in the afternoon.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68. Breezy.

    High: 68 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 52. North northeast wind around 6 mph.
Tonight
A chance of showers and thunderstorms. Increasing clouds, with a low around 40. North wind 6 to 9 mph. Chance of precipitation is 40%.
Thursday
Showers, mainly before 1pm. High near 46. Northwest wind 7 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Scattered showers, mainly before 7pm. Mostly cloudy, with a low around 33. North northwest wind around 6 mph becoming south in the evening. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 59. South southwest wind 5 to 7 mph becoming east in the afternoon.
Friday Night
A 40 percent chance of showers, mainly after midnight. Partly cloudy, with a low around 33. East northeast wind 6 to 10 mph becoming west in the evening.
Saturday
Mostly sunny, with a high near 53. North northwest wind 6 to 8 mph becoming southeast in the afternoon.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 68. Breezy.
Sunday Night
A 30 percent chance of showers, mainly after midnight. Partly cloudy, with a low around 35.
Monday
A chance of showers. Mostly sunny, with a high near 59.
Monday Night
A slight chance of rain and snow showers. Partly cloudy, with a low around 28.
Tuesday
Sunny, with a high near 55.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thermopolis WY
 43.64°N 108.23°W (Elev. 4436 ft)
Last Update:
3:32 pm MDT Oct 15, 2025
Forecast Valid:
4pm MDT Oct 15, 2025-6pm MDT Oct 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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