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

43°F

6°C

Humidity 35%
Wind Speed WSW 11 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 28 Mar 06:20 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Today

    Today: Mostly cloudy, with a high near 60. Light and variable wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 60 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 34. Northwest wind 5 to 8 mph becoming southwest after midnight.

    Low: 34 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 58. Light and variable wind becoming south 5 to 7 mph in the afternoon.

    High: 58 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 32. North wind 6 to 9 mph becoming southeast after midnight. Chance of precipitation is 60%.

    Low: 32 °F

    Rain Likely

  • Monday

    Monday: Rain and snow likely before noon, then a chance of snow. Mostly cloudy, with a high near 42. Breezy, with a west northwest wind 7 to 12 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Rain/Snow
    Likely then
    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: A 20 percent chance of snow before midnight. Partly cloudy, with a low around 15. Northwest wind 16 to 21 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 32 mph.

    Low: 15 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42. West wind 6 to 8 mph becoming south in the afternoon.

    High: 42 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24. South southeast wind around 10 mph, with gusts as high as 18 mph.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly cloudy, with a high near 60. Light and variable wind becoming west northwest 5 to 8 mph in the afternoon.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 34. Northwest wind 5 to 8 mph becoming southwest after midnight.
Sunday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 58. Light and variable wind becoming south 5 to 7 mph in the afternoon.
Sunday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 32. North wind 6 to 9 mph becoming southeast after midnight. Chance of precipitation is 60%.
Monday
Rain and snow likely before noon, then a chance of snow. Mostly cloudy, with a high near 42. Breezy, with a west northwest wind 7 to 12 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday Night
A 20 percent chance of snow before midnight. Partly cloudy, with a low around 15. Northwest wind 16 to 21 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 32 mph.
Tuesday
Mostly sunny, with a high near 42. West wind 6 to 8 mph becoming south in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 24. South southeast wind around 10 mph, with gusts as high as 18 mph.
Wednesday
Mostly cloudy, with a high near 57.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 32.
Thursday
Rain and snow likely. Mostly cloudy, with a high near 50. Breezy.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 23.
Friday
A chance of snow. Mostly cloudy, with a high near 40. Breezy.
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:
3:17 am MDT Mar 28, 2026
Forecast Valid:
6am MDT Mar 28, 2026-6pm MDT Apr 3, 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