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

Pacific Storm System Moves Inland; Strong Storm in Alaska

A Pacific storm system will bring low elevation/valley rain and mountain snow as it moves inland to the central Great Basin through the central Rockies through Thursday. Scattered thunderstorms are likely from California into the Great Basin. A large low pressure system continues to bring snow, blizzard conditions, damaging winds, and mixed precipitation along the Bering Sea and Southwest Alaska. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.

Clear

20°F

-7°C

Humidity 70%
Wind Speed ESE 5 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 11 Feb 08:54 AM MST
Extended Forecast for

Lewistown Municipal MT

  • Today

    Today: Sunny, with a high near 44. Light and variable wind.

    High: 44 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 21. South wind 3 to 6 mph.

    Low: 21 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 47. South wind around 6 mph becoming west in the afternoon.

    High: 47 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24. Southwest wind around 7 mph.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 47. Southwest wind 6 to 8 mph.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26. Southwest wind 5 to 7 mph.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 46. Southwest wind around 8 mph.

    High: 46 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A slight chance of rain after 5am. Mostly cloudy, with a low around 27. South wind around 7 mph.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: A slight chance of rain and snow before 8am, then a slight chance of snow between 8am and 11am. Partly sunny, with a high near 46.

    High: 46 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Sunny

Detailed Forecast

Today
Sunny, with a high near 44. Light and variable wind.
Tonight
Mostly clear, with a low around 21. South wind 3 to 6 mph.
Thursday
Sunny, with a high near 47. South wind around 6 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 24. Southwest wind around 7 mph.
Friday
Mostly sunny, with a high near 47. Southwest wind 6 to 8 mph.
Friday Night
Mostly cloudy, with a low around 26. Southwest wind 5 to 7 mph.
Saturday
Mostly cloudy, with a high near 46. Southwest wind around 8 mph.
Saturday Night
A slight chance of rain after 5am. Mostly cloudy, with a low around 27. South wind around 7 mph.
Sunday
A slight chance of rain and snow before 8am, then a slight chance of snow between 8am and 11am. Partly sunny, with a high near 46.
Sunday Night
A slight chance of rain and snow before 11pm. Mostly cloudy, with a low around 27.
Washington's Birthday
A slight chance of rain and snow. Mostly sunny, with a high near 48.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 25.
Tuesday
A chance of snow. Mostly cloudy, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
3:03 am MST Feb 11, 2026
Forecast Valid:
9am MST Feb 11, 2026-6pm MST Feb 17, 2026
 
Forecast Discussion
 
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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