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

69°F

21°C

Humidity 31%
Wind Speed NA 0 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 04 Jul 09:00 PM MDT
Extended Forecast for

12 Miles WSW Windham MT

  • Tonight

    Tonight: Mostly clear, with a low around 57. Calm wind becoming west southwest around 5 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 77. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 77 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 54. North wind around 6 mph becoming calm after midnight. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 70. Light and variable wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 70 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 3am, then showers likely. Low around 56. Southeast wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 72. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 56. Light and variable wind becoming southwest 5 to 8 mph after midnight.

    Low: 56 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79. West southwest wind 6 to 9 mph.

    High: 79 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 57. Calm wind becoming west southwest around 5 mph.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 77. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 54. North wind around 6 mph becoming calm after midnight. Chance of precipitation is 50%.
Monday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 70. Light and variable wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Monday Night
Showers and possibly a thunderstorm before 3am, then showers likely. Low around 56. Southeast wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 80%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 72. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 56. Light and variable wind becoming southwest 5 to 8 mph after midnight.
Wednesday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79. West southwest wind 6 to 9 mph.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 56.
Thursday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles WSW Windham MT
 47°N 110.38°W (Elev. 6178 ft)
Last Update:
4:07 pm MDT Jul 4, 2026
Forecast Valid:
9pm MDT Jul 4, 2026-6pm MDT Jul 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation