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

  • This Afternoon

    This Afternoon: Sunny, with a high near 66. Calm wind becoming west around 6 mph.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 40. West wind 5 to 7 mph becoming southeast in the evening.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72. South southwest wind around 6 mph becoming light and variable.

    High: 72 °F

    Mostly Sunny

  • Monday Night

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

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. Southwest wind 3 to 6 mph.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. South wind 6 to 8 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 71. South wind 7 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 71 °F

    Partly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain showers before midnight, then rain between midnight and 3am, then rain and snow after 3am. Some thunder is also possible. Cloudy, with a low around 28. Blustery, with a west northwest wind 17 to 26 mph, with gusts as high as 32 mph.

    Low: 28 °F

    Showers then
    Rain/Snow and
    Blustery

  • Thursday

    Thursday: Rain and snow likely, becoming all snow after 9am. Mostly cloudy, with a high near 40. Windy.

    High: 40 °F

    Windy.
    Rain/Snow
    Likely then
    Chance Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 66. Calm wind becoming west around 6 mph.
Tonight
Partly cloudy, with a low around 40. West wind 5 to 7 mph becoming southeast in the evening.
Monday
Mostly sunny, with a high near 72. South southwest wind around 6 mph becoming light and variable.
Monday Night
Partly cloudy, with a low around 44. Northeast wind around 6 mph becoming south after midnight.
Tuesday
Mostly sunny, with a high near 79. Southwest wind 3 to 6 mph.
Tuesday Night
Mostly cloudy, with a low around 50. South wind 6 to 8 mph.
Wednesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 71. South wind 7 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Wednesday Night
Rain showers before midnight, then rain between midnight and 3am, then rain and snow after 3am. Some thunder is also possible. Cloudy, with a low around 28. Blustery, with a west northwest wind 17 to 26 mph, with gusts as high as 32 mph.
Thursday
Rain and snow likely, becoming all snow after 9am. Mostly cloudy, with a high near 40. Windy.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 23. Blustery.
Friday
A chance of snow. Partly sunny, with a high near 39.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 20.
Saturday
A slight chance of snow. Partly sunny, with a high near 40.
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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:
11:17 am MDT Apr 19, 2026
Forecast Valid:
12pm MDT Apr 19, 2026-6pm MDT Apr 25, 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