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 MT

  • Today

    Today: Sunny, with a high near 55. West northwest wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 55 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. West northwest wind 5 to 9 mph becoming southeast after midnight.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 66. Light and variable wind becoming west around 6 mph in the afternoon.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West wind 6 to 8 mph becoming south in the evening.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72. Southwest wind around 7 mph becoming northwest in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. North northwest wind around 6 mph becoming south southeast after midnight.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. West southwest wind 6 to 9 mph, with gusts as high as 18 mph.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 49. Southeast wind 6 to 8 mph.

    Low: 49 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain after noon. Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

Today
Sunny, with a high near 55. West northwest wind 6 to 11 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 28. West northwest wind 5 to 9 mph becoming southeast after midnight.
Sunday
Sunny, with a high near 66. Light and variable wind becoming west around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 40. West wind 6 to 8 mph becoming south in the evening.
Monday
Mostly sunny, with a high near 72. Southwest wind around 7 mph becoming northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 44. North northwest wind around 6 mph becoming south southeast after midnight.
Tuesday
Mostly sunny, with a high near 79. West southwest wind 6 to 9 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 49. Southeast wind 6 to 8 mph.
Wednesday
A chance of rain after noon. Partly sunny, with a high near 70.
Wednesday Night
Rain before 3am, then rain and snow. Mostly cloudy, with a low around 30.
Thursday
Rain and snow. Mostly cloudy, with a high near 42. Breezy.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 22.
Friday
A chance of snow. Partly sunny, with a high near 43.
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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:
3:47 am MDT Apr 18, 2026
Forecast Valid:
6am MDT Apr 18, 2026-6pm MDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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