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

  • Today

    Today: Sunny, with a high near 65. South southeast wind around 6 mph becoming light and variable.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 40. West wind 6 to 10 mph becoming south southeast 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 wind around 7 mph becoming south after midnight.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. Southwest wind 6 to 8 mph.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. South southeast wind 8 to 10 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 70. South wind 9 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 70 °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 18 to 28 mph, with gusts as high as 36 mph.

    Low: 28 °F

    Showers then
    Rain/Snow and
    Blustery

  • Thursday

    Thursday: Snow likely, mainly before noon. Mostly cloudy, with a high near 39. Windy.

    High: 39 °F

    Snow Likely
    and Windy

Detailed Forecast

Today
Sunny, with a high near 65. South southeast wind around 6 mph becoming light and variable.
Tonight
Partly cloudy, with a low around 40. West wind 6 to 10 mph becoming south southeast 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 wind around 7 mph becoming south after midnight.
Tuesday
Mostly sunny, with a high near 78. Southwest wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 50. South southeast wind 8 to 10 mph.
Wednesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 70. South wind 9 to 16 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 18 to 28 mph, with gusts as high as 36 mph.
Thursday
Snow likely, mainly before noon. Mostly cloudy, with a high near 39. 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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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
3:32 am MDT Apr 19, 2026
Forecast Valid:
5am MDT Apr 19, 2026-6pm MDT Apr 25, 2026
 
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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