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.

NA

45°F

7°C

Humidity 48%
Wind Speed W 8 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 15 Apr 02:05 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: Rain and snow, becoming all snow after 2am. Low around 26. West northwest wind 9 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 26 °F

    Rain/Snow

  • Thursday

    Thursday: A chance of snow before noon, then a chance of snow showers after 1pm. Partly sunny, with a high near 38. Breezy, with a west northwest wind 16 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 18. West northwest wind 9 to 18 mph, with gusts as high as 29 mph.

    Low: 18 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Friday

    Friday: A 40 percent chance of snow, mainly after noon. Partly sunny, with a high near 41. West wind 8 to 15 mph, with gusts as high as 25 mph. Little or no snow accumulation expected.

    High: 41 °F

    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Partly cloudy, with a low around 24. North northwest wind 6 to 13 mph becoming west southwest after midnight. Winds could gust as high as 22 mph.

    Low: 24 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 54. Southwest wind 7 to 9 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 54 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Northwest wind around 8 mph becoming south in the evening.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65. South wind 6 to 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain and snow, becoming all snow after 2am. Low around 26. West northwest wind 9 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.
Thursday
A chance of snow before noon, then a chance of snow showers after 1pm. Partly sunny, with a high near 38. Breezy, with a west northwest wind 16 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 18. West northwest wind 9 to 18 mph, with gusts as high as 29 mph.
Friday
A 40 percent chance of snow, mainly after noon. Partly sunny, with a high near 41. West wind 8 to 15 mph, with gusts as high as 25 mph. Little or no snow accumulation expected.
Friday Night
A 20 percent chance of snow before midnight. Partly cloudy, with a low around 24. North northwest wind 6 to 13 mph becoming west southwest after midnight. Winds could gust as high as 22 mph.
Saturday
Sunny, with a high near 54. Southwest wind 7 to 9 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Mostly clear, with a low around 30. Northwest wind around 8 mph becoming south in the evening.
Sunday
Sunny, with a high near 65. South wind 6 to 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 42.
Wednesday
A chance of rain and thunderstorms. Partly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
9:22 pm MDT Apr 15, 2026
Forecast Valid:
10pm MDT Apr 15, 2026-6pm MDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation