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

  • Today

    Today: Sunny, with a high near 51. Northwest wind around 7 mph.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 27. North wind 6 to 8 mph becoming southeast in the evening.

    Low: 27 °F

    Mostly Clear

  • Friday

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

    High: 64 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. Southeast wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers after noon. Partly sunny, with a high near 73. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.

    High: 73 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 41. West southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after noon. Partly sunny, with a high near 56. West wind 8 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%.

    High: 56 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain. Mostly cloudy, with a low around 33. North wind 7 to 10 mph becoming east southeast after midnight.

    Low: 33 °F

    Rain

  • Monday

    Monday: Rain. Cloudy, with a high near 46.

    High: 46 °F

    Rain

Detailed Forecast

Today
Sunny, with a high near 51. Northwest wind around 7 mph.
Tonight
Mostly clear, with a low around 27. North wind 6 to 8 mph becoming southeast in the evening.
Friday
Mostly sunny, with a high near 64. Southeast wind 7 to 9 mph.
Friday Night
Mostly cloudy, with a low around 41. Southeast wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
A 30 percent chance of showers after noon. Partly sunny, with a high near 73. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.
Saturday Night
A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 41. West southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Sunday
Showers likely, mainly after noon. Partly sunny, with a high near 56. West wind 8 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%.
Sunday Night
Rain. Mostly cloudy, with a low around 33. North wind 7 to 10 mph becoming east southeast after midnight.
Monday
Rain. Cloudy, with a high near 46.
Monday Night
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 29.
Tuesday
A slight chance of rain. Partly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 33.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 58.
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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:
4:36 am MDT Apr 9, 2026
Forecast Valid:
10am MDT Apr 9, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation