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

N/A

Humidity 48%
Wind Speed W 8 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 15 Apr 02:05 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 57. North northwest wind around 10 mph, with gusts as high as 18 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 34. North northwest wind 5 to 9 mph becoming south in the evening.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68. South wind around 6 mph becoming northwest in the afternoon.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. West wind 5 to 7 mph becoming south in the evening.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 66. Southwest wind 6 to 8 mph becoming north in the afternoon. Chance of precipitation is 20%.

    High: 66 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 40. North northeast wind 5 to 8 mph becoming southeast after midnight.

    Low: 40 °F

    Chance Rain

  • Sunday

    Sunday: A slight chance of rain before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of rain after 3pm. Mostly sunny, with a high near 66. South wind 6 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 30%.

    High: 66 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. North northwest wind 5 to 9 mph becoming calm.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 57. North northwest wind around 10 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 34. North northwest wind 5 to 9 mph becoming south in the evening.
Friday
Sunny, with a high near 68. South wind around 6 mph becoming northwest in the afternoon.
Friday Night
Mostly clear, with a low around 40. West wind 5 to 7 mph becoming south in the evening.
Saturday
A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 66. Southwest wind 6 to 8 mph becoming north in the afternoon. Chance of precipitation is 20%.
Saturday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 40. North northeast wind 5 to 8 mph becoming southeast after midnight.
Sunday
A slight chance of rain before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of rain after 3pm. Mostly sunny, with a high near 66. South wind 6 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 40. North northwest wind 5 to 9 mph becoming calm.
Monday
Partly sunny, with a high near 62.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 38.
Tuesday
A chance of rain. Partly sunny, with a high near 55.
Tuesday Night
Partly cloudy, with a low around 33.
Wednesday
Sunny, with a high near 64.
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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:
12:31 pm MDT Apr 30, 2026
Forecast Valid:
1pm MDT Apr 30, 2026-6pm MDT May 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation