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 MT

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 51. Northwest wind around 6 mph.

    High: 51 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. North wind 5 to 7 mph becoming east southeast in the evening.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 65. Southeast wind 6 to 8 mph.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers after noon. Partly sunny, with a high near 73. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 73 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 41. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after noon. Partly sunny, with a high near 55. West wind 6 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

    High: 55 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain. Cloudy, with a low around 33. North wind 6 to 9 mph becoming east after midnight.

    Low: 33 °F

    Rain

  • Monday

    Monday: Rain. Cloudy, with a high near 47.

    High: 47 °F

    Rain

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 51. Northwest wind around 6 mph.
Tonight
Mostly clear, with a low around 28. North wind 5 to 7 mph becoming east southeast in the evening.
Friday
Mostly sunny, with a high near 65. Southeast wind 6 to 8 mph.
Friday Night
Mostly cloudy, with a low around 41. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday
A 30 percent chance of showers after noon. Partly sunny, with a high near 73. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Saturday Night
A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 41. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
Showers likely, mainly after noon. Partly sunny, with a high near 55. West wind 6 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
Rain. Cloudy, with a low around 33. North wind 6 to 9 mph becoming east after midnight.
Monday
Rain. Cloudy, with a high near 47.
Monday Night
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 29.
Tuesday
A slight chance of rain. Partly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 33.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
4:36 am MDT Apr 9, 2026
Forecast Valid:
7am MDT Apr 9, 2026-6pm MDT Apr 15, 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