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

Hazardous Weather Conditions

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Partly Cloudy

39°F

4°C

Humidity 27%
Wind Speed W 23 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 11 Mar 03:00 PM MDT
Extended Forecast for

Lewistown MT

Winter Storm Watch March 12, 06:00pm until March 14, 06:00pm
High Wind Warning March 12, 03:00am until March 12, 06:00pm
Click here for hazard details and duration
Winter Storm Watch
High Wind Warning

  • Tonight

    Tonight: A slight chance of snow, mixing with rain after 10pm, then gradually ending. Cloudy, with a low around 31. Breezy, with a southwest wind 7 to 12 mph becoming west southwest 20 to 25 mph after midnight. Winds could gust as high as 43 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Rain/Snow
    then Cloudy
    and Breezy

  • Thursday

    Thursday: A chance of rain showers before 9am, then a chance of rain and snow showers between 9am and 11am, then a chance of snow showers after 11am. Cloudy, with a temperature falling to around 36 by 5pm. Windy, with a west northwest wind 28 to 38 mph, with gusts as high as 55 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 47 °F⇓

    Windy. Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Thursday Night

    Thursday Night: Snow. Patchy blowing snow between 7pm and 9pm. Low around 23. Blustery, with a west wind 18 to 23 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Snow and
    Patchy
    Blowing Snow

  • Friday

    Friday: Snow. High near 32. West northwest wind around 8 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    High: 32 °F

    Snow

  • Friday Night

    Friday Night: Snow. Low around 19. North wind around 6 mph becoming southeast after midnight. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 19 °F

    Snow

  • Saturday

    Saturday: Snow. High near 33. East southeast wind 5 to 13 mph becoming north in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    High: 33 °F

    Snow

  • Saturday Night

    Saturday Night: Snow, mainly before midnight. Low around 6. North northwest wind 7 to 17 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 6 °F

    Snow then
    Chance Snow

  • Sunday

    Sunday: A slight chance of snow. Partly sunny, with a high near 29. Southwest wind 3 to 7 mph.

    High: 29 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: A chance of snow, mainly after midnight. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Chance Snow

Detailed Forecast

Tonight
A slight chance of snow, mixing with rain after 10pm, then gradually ending. Cloudy, with a low around 31. Breezy, with a southwest wind 7 to 12 mph becoming west southwest 20 to 25 mph after midnight. Winds could gust as high as 43 mph. Chance of precipitation is 20%.
Thursday
A chance of rain showers before 9am, then a chance of rain and snow showers between 9am and 11am, then a chance of snow showers after 11am. Cloudy, with a temperature falling to around 36 by 5pm. Windy, with a west northwest wind 28 to 38 mph, with gusts as high as 55 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow. Patchy blowing snow between 7pm and 9pm. Low around 23. Blustery, with a west wind 18 to 23 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow. High near 32. West northwest wind around 8 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Friday Night
Snow. Low around 19. North wind around 6 mph becoming southeast after midnight. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Saturday
Snow. High near 33. East southeast wind 5 to 13 mph becoming north in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Saturday Night
Snow, mainly before midnight. Low around 6. North northwest wind 7 to 17 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday
A slight chance of snow. Partly sunny, with a high near 29. Southwest wind 3 to 7 mph.
Sunday Night
A chance of snow, mainly after midnight. Mostly cloudy, with a low around 14.
Monday
A chance of snow before 3pm, then a chance of rain. Cloudy, with a high near 47.
Monday Night
A chance of rain. Mostly cloudy, with a low around 35.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
1:32 pm MDT Mar 11, 2026
Forecast Valid:
3pm MDT Mar 11, 2026-6pm MDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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