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

USCRN SITE NEAR LEWISTOWN 42WSW (JRWM8)

Lat: 46.88472°NLon: 110.28944°WElev: 5045.0ft.

NA

72°F

22°C

Humidity 30%
Wind Speed NA 9 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 20 Jun 04:00 PM MDT
Extended Forecast for

5 Miles SW Windham MT

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76. Northeast wind around 7 mph.

    High: 76 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 52. South southwest wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 3pm. Mostly sunny, with a high near 69. West wind 9 to 13 mph becoming north northeast in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 30%.

    High: 69 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 46. Northeast wind 5 to 8 mph becoming light and variable. Chance of precipitation is 50%.

    Low: 46 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 61. North northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 50%.

    High: 61 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. North northwest wind 13 to 18 mph becoming light and variable after midnight. Winds could gust as high as 28 mph.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68. Light and variable wind becoming north northeast 5 to 10 mph in the afternoon.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45. Northeast wind 5 to 10 mph becoming south southwest after midnight.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76. Northeast wind around 7 mph.
Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 52. South southwest wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Sunday
A chance of showers, with thunderstorms also possible after 3pm. Mostly sunny, with a high near 69. West wind 9 to 13 mph becoming north northeast in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 46. Northeast wind 5 to 8 mph becoming light and variable. Chance of precipitation is 50%.
Monday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 61. North northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 50%.
Monday Night
Mostly clear, with a low around 41. North northwest wind 13 to 18 mph becoming light and variable after midnight. Winds could gust as high as 28 mph.
Tuesday
Sunny, with a high near 68. Light and variable wind becoming north northeast 5 to 10 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 45. Northeast wind 5 to 10 mph becoming south southwest after midnight.
Wednesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 79.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Windham MT
 47.03°N 110.23°W (Elev. 4941 ft)
Last Update:
3:47 pm MDT Jun 20, 2026
Forecast Valid:
4pm MDT Jun 20, 2026-6pm MDT Jun 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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