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

  • This Afternoon

    This Afternoon: A 50 percent chance of showers, mainly after 3pm. Mostly cloudy, with a high near 58. Southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 58 °F

    Chance
    Showers

  • Tonight

    Tonight: Rain and snow showers, becoming all snow after 2am. Some thunder is also possible. Low around 26. West northwest wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New 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.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of showers, mainly after 3pm. Mostly cloudy, with a high near 58. Southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Tonight
Rain and snow showers, becoming all snow after 2am. Some thunder is also possible. Low around 26. West northwest wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New 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.
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.
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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:
1:16 pm MDT Apr 15, 2026
Forecast Valid:
2pm MDT Apr 15, 2026-6pm MDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation