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

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

N/A

Humidity 80%
Wind Speed SE 4 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 05 Apr 02:15 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: Increasing clouds, with a low around 27. North northwest wind around 6 mph becoming southeast after midnight.

    Low: 27 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 52. West southwest wind around 6 mph becoming north in the afternoon.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. North northeast wind around 7 mph becoming southeast after midnight.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Southeast wind 7 to 9 mph.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. Southeast wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 73. South wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 73 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 42. West southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 42 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 59. West northwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 59 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain likely. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Rain Likely

Detailed Forecast

Tonight
Increasing clouds, with a low around 27. North northwest wind around 6 mph becoming southeast after midnight.
Thursday
Sunny, with a high near 52. West southwest wind around 6 mph becoming north in the afternoon.
Thursday Night
Mostly clear, with a low around 28. North northeast wind around 7 mph becoming southeast after midnight.
Friday
Sunny, with a high near 64. Southeast wind 7 to 9 mph.
Friday Night
Mostly cloudy, with a low around 40. Southeast wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 73. South wind 8 to 13 mph, with gusts as high as 22 mph.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 42. West southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Sunday
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 59. West northwest wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Rain likely. Mostly cloudy, with a low around 31.
Monday
Rain and snow. Mostly cloudy, with a high near 41.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 26.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 52.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
A slight chance of rain. Partly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
4:46 pm MDT Apr 8, 2026
Forecast Valid:
5pm MDT Apr 8, 2026-6pm MDT Apr 15, 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