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

47°F

8°C

Humidity 74%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 08 Aug 01:00 AM MDT
Extended Forecast for

4 Miles SW Windham MT

  • Overnight

    Overnight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. West wind 11 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, with thunderstorms also possible after noon. Cloudy, then gradually becoming mostly sunny, with a high near 68. Breezy, with a west northwest wind 14 to 19 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 70%.

    High: 68 °F

    Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers after 4am. Partly cloudy, with a low around 50. Breezy, with a west wind 18 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.

    Low: 50 °F

    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 3pm. Widespread haze after noon. Mostly sunny, with a high near 71. Breezy, with a west northwest wind 17 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.

    High: 71 °F

    Breezy.
    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Widespread haze before 7pm. Partly cloudy, with a low around 50. Northwest wind 15 to 20 mph becoming southwest 8 to 13 mph after midnight. Winds could gust as high as 30 mph.

    Low: 50 °F

    Haze then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 77. Southwest wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. Northwest wind 7 to 14 mph becoming southwest after midnight. Winds could gust as high as 21 mph.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 83. Southwest wind 9 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. West wind 11 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Friday
Showers likely, with thunderstorms also possible after noon. Cloudy, then gradually becoming mostly sunny, with a high near 68. Breezy, with a west northwest wind 14 to 19 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers after 4am. Partly cloudy, with a low around 50. Breezy, with a west wind 18 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
Saturday
A slight chance of showers, with thunderstorms also possible after 3pm. Widespread haze after noon. Mostly sunny, with a high near 71. Breezy, with a west northwest wind 17 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Saturday Night
Widespread haze before 7pm. Partly cloudy, with a low around 50. Northwest wind 15 to 20 mph becoming southwest 8 to 13 mph after midnight. Winds could gust as high as 30 mph.
Sunday
Sunny, with a high near 77. Southwest wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Mostly clear, with a low around 54. Northwest wind 7 to 14 mph becoming southwest after midnight. Winds could gust as high as 21 mph.
Monday
Mostly sunny, with a high near 83. Southwest wind 9 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Sunny, with a high near 80.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Windham MT
 47.05°N 110.2°W (Elev. 4600 ft)
Last Update:
1:01 am MDT Aug 8, 2025
Forecast Valid:
2am MDT Aug 8, 2025-6pm MDT Aug 14, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation