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.

NA

N/A

Humidity 48%
Wind Speed W 8 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 15 Apr 02:05 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 71. West northwest wind around 7 mph.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 44. North wind around 7 mph becoming south after midnight.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. South southwest wind 5 to 7 mph.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 49. South southeast wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm, mainly after 3pm. Partly sunny, with a high near 72. South wind 10 to 17 mph becoming west in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%.

    High: 72 °F

    Partly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain before 3am, then rain and snow. Some thunder is also possible. Low around 27. Windy, with a west northwest wind 17 to 22 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 27 °F

    Showers then
    Rain/Snow and
    Windy

  • Thursday

    Thursday: Snow. High near 36. Windy, with a northwest wind 29 to 34 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 36 °F

    Snow and
    Windy

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 22. Blustery, with a west northwest wind 16 to 25 mph, with gusts as high as 36 mph.

    Low: 22 °F

    Chance Snow
    and Blustery

  • Friday

    Friday: A chance of snow. Partly sunny, with a high near 36. Breezy.

    High: 36 °F

    Chance Snow
    and Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 71. West northwest wind around 7 mph.
Tonight
Partly cloudy, with a low around 44. North wind around 7 mph becoming south after midnight.
Tuesday
Mostly sunny, with a high near 79. South southwest wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 49. South southeast wind 8 to 10 mph, with gusts as high as 18 mph.
Wednesday
Showers likely and possibly a thunderstorm, mainly after 3pm. Partly sunny, with a high near 72. South wind 10 to 17 mph becoming west in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%.
Wednesday Night
Rain before 3am, then rain and snow. Some thunder is also possible. Low around 27. Windy, with a west northwest wind 17 to 22 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Thursday
Snow. High near 36. Windy, with a northwest wind 29 to 34 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 22. Blustery, with a west northwest wind 16 to 25 mph, with gusts as high as 36 mph.
Friday
A chance of snow. Partly sunny, with a high near 36. Breezy.
Friday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 19.
Saturday
A slight chance of snow. Partly sunny, with a high near 39.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
A slight chance of snow. Partly sunny, with a high near 42.
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:
9:31 am MDT Apr 20, 2026
Forecast Valid:
12pm MDT Apr 20, 2026-6pm MDT Apr 26, 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