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

Heavy Rain in the Southern U.S.; Active Weather Continues in Alaska

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains today, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. Another Bering system will impact the Alaskan West Coast and Central Interior through the weekend bringing moderate to heavy snow, high winds, and/or some blizzard conditions. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

37°F

3°C

Humidity 59%
Wind Speed SSW 4 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 13 Feb 04:54 PM MST
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. South wind around 7 mph.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 47. West southwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 47 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 29. South southwest wind 6 to 8 mph.

    Low: 29 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A chance of rain and snow. Mostly cloudy, with a high near 45. West wind around 6 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 45 °F

    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A slight chance of rain and snow before 11pm. Mostly cloudy, with a low around 26. West wind around 6 mph becoming south southwest after midnight. Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 49. South wind around 6 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 26. East southeast wind around 8 mph.

    Low: 26 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: Snow likely. Mostly cloudy, with a high near 39. East wind 7 to 9 mph becoming northwest in the morning.

    High: 39 °F

    Snow Likely

  • Tuesday Night

    Tuesday Night: A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 26. South wind around 7 mph.
Saturday
Partly sunny, with a high near 47. West southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Saturday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 29. South southwest wind 6 to 8 mph.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 45. West wind around 6 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday Night
A slight chance of rain and snow before 11pm. Mostly cloudy, with a low around 26. West wind around 6 mph becoming south southwest after midnight. Chance of precipitation is 20%.
Washington's Birthday
Mostly sunny, with a high near 49. South wind around 6 mph.
Monday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 26. East southeast wind around 8 mph.
Tuesday
Snow likely. Mostly cloudy, with a high near 39. East wind 7 to 9 mph becoming northwest in the morning.
Tuesday Night
A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 15.
Wednesday
A chance of snow. Mostly cloudy, with a high near 30.
Wednesday Night
A slight chance of snow. Mostly cloudy, with a low around 13.
Thursday
A chance of snow. Mostly cloudy, with a high near 34.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 14.
Friday
A chance of snow. Mostly cloudy, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
4:32 pm MST Feb 13, 2026
Forecast Valid:
5pm MST Feb 13, 2026-6pm MST Feb 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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