National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

We are hiring an entry level meteorologist! Applications will be accepted through January 29.

Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.

Clear

21°F

-6°C

Humidity 62%
Wind Speed W 6 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 20 Jan 11:05 PM MST
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: Increasing clouds, with a low around 15. West northwest wind 13 to 18 mph, with gusts as high as 31 mph.

    Low: 15 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 22. Northwest wind 11 to 17 mph, with gusts as high as 29 mph.

    High: 22 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 4. Wind chill values as low as -5. West northwest wind 5 to 7 mph.

    Low: 4 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 13. Wind chill values as low as -5. West northwest wind 7 to 9 mph, with gusts as high as 18 mph.

    High: 13 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -8. North northwest wind 6 to 8 mph becoming east after midnight.

    Low: -8 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 9. East wind around 6 mph becoming west northwest in the morning.

    High: 9 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -3. Northwest wind around 6 mph becoming west southwest in the evening.

    Low: -3 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 23. West wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 23 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 7.

    Low: 7 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 15. West northwest wind 13 to 18 mph, with gusts as high as 31 mph.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 22. Northwest wind 11 to 17 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly cloudy, with a low around 4. Wind chill values as low as -5. West northwest wind 5 to 7 mph.
Thursday
Partly sunny, with a high near 13. Wind chill values as low as -5. West northwest wind 7 to 9 mph, with gusts as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around -8. North northwest wind 6 to 8 mph becoming east after midnight.
Friday
Mostly sunny, with a high near 9. East wind around 6 mph becoming west northwest in the morning.
Friday Night
Partly cloudy, with a low around -3. Northwest wind around 6 mph becoming west southwest in the evening.
Saturday
Partly sunny, with a high near 23. West wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 43.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 44.
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:
9:34 pm MST Jan 20, 2026
Forecast Valid:
11pm MST Jan 20, 2026-6pm MST Jan 27, 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