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

  • Today

    Today: A chance of rain before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of rain after 5pm. Partly sunny, with a high near 57. South wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    High: 57 °F

    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of rain between 9pm and midnight. Mostly cloudy, with a low around 34. West wind 8 to 10 mph.

    Low: 34 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60. West southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. West wind 8 to 13 mph becoming light southwest. Winds could gust as high as 21 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain after noon. Mostly cloudy, with a high near 58. West southwest wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 58 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain before midnight, then rain and snow. Low around 27. West southwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Rain then
    Rain/Snow

  • Thursday

    Thursday: Snow. High near 36. Northwest wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 36 °F

    Snow

  • Thursday Night

    Thursday Night: A chance of snow, mainly before midnight. Mostly cloudy, with a low around 17. Blustery, with a west wind 15 to 22 mph, with gusts as high as 30 mph.

    Low: 17 °F

    Chance Snow
    and Blustery

  • Friday

    Friday: A chance of snow, mainly after noon. Partly sunny, with a high near 41. Breezy.

    High: 41 °F

    Chance Snow
    and Breezy

Detailed Forecast

Today
A chance of rain before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of rain after 5pm. Partly sunny, with a high near 57. South wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Tonight
A 30 percent chance of rain between 9pm and midnight. Mostly cloudy, with a low around 34. West wind 8 to 10 mph.
Tuesday
Mostly sunny, with a high near 60. West southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 36. West wind 8 to 13 mph becoming light southwest. Winds could gust as high as 21 mph.
Wednesday
A 40 percent chance of rain after noon. Mostly cloudy, with a high near 58. West southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Rain before midnight, then rain and snow. Low around 27. West southwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday
Snow. High near 36. Northwest wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Thursday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 17. Blustery, with a west wind 15 to 22 mph, with gusts as high as 30 mph.
Friday
A chance of snow, mainly after noon. Partly sunny, with a high near 41. Breezy.
Friday Night
Partly cloudy, with a low around 21.
Saturday
A slight chance of rain and snow. Mostly sunny, with a high near 53.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 62.
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:
3:32 am MDT Apr 13, 2026
Forecast Valid:
4am MDT Apr 13, 2026-6pm MDT Apr 19, 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