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

  • Tonight

    Tonight: Mostly clear, with a low around 28. East southeast wind around 7 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 66. Southeast wind 7 to 9 mph.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 42. East southeast wind 7 to 9 mph.

    Low: 42 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers after noon. Partly sunny, with a high near 74. Southwest wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 74 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 40. West southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 40 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 3pm. Partly sunny, with a high near 58. West wind 8 to 10 mph becoming north in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.

    High: 58 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain. Low around 36. Northeast wind 6 to 9 mph becoming southeast after midnight. Chance of precipitation is 80%.

    Low: 36 °F

    Rain

  • Monday

    Monday: Rain. Mostly cloudy, with a high near 52. South wind 6 to 9 mph becoming northwest in the afternoon.

    High: 52 °F

    Rain

  • Monday Night

    Monday Night: A chance of rain, mainly before midnight. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 28. East southeast wind around 7 mph.
Friday
Mostly sunny, with a high near 66. Southeast wind 7 to 9 mph.
Friday Night
Mostly cloudy, with a low around 42. East southeast wind 7 to 9 mph.
Saturday
A 40 percent chance of showers after noon. Partly sunny, with a high near 74. Southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Saturday Night
A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 40. West southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Sunday
Showers likely, with thunderstorms also possible after 3pm. Partly sunny, with a high near 58. West wind 8 to 10 mph becoming north in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Sunday Night
Rain. Low around 36. Northeast wind 6 to 9 mph becoming southeast after midnight. Chance of precipitation is 80%.
Monday
Rain. Mostly cloudy, with a high near 52. South wind 6 to 9 mph becoming northwest in the afternoon.
Monday Night
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 34.
Tuesday
A chance of rain after noon. Partly sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 34.
Wednesday
A chance of rain. Mostly cloudy, with a high near 52.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 27.
Thursday
A chance of snow. Partly sunny, with a high near 45.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
5:21 pm MDT Apr 9, 2026
Forecast Valid:
8pm MDT Apr 9, 2026-6pm MDT Apr 16, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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