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

Severe Thunderstorm and Flash Flood Threats Continue into the Weekend

Severe thunderstorms are expected from the southern Plains to the Midwest through Friday night. Severe storm hazards may include large hail, severe winds, and tornadoes, some of which may be strong. There will be another chance for severe thunderstorms on Saturday for portions of Texas, the Lower Mississippi Valley, and the Ohio Valley. Storms could result in locally heavy rain and flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

32°F

0°C

Humidity 63%
Wind Speed WSW 20 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 07 Mar 01:15 AM MST
Extended Forecast for

Lewistown MT

High Wind Warning March 8, 03:00am until March 9, 12:00am
Click here for hazard details and duration
High Wind Warning

  • Overnight

    Overnight: A 30 percent chance of snow. Partly cloudy, with a low around 27. West southwest wind 8 to 10 mph, with gusts as high as 18 mph. Little or no snow accumulation expected.

    Low: 27 °F

    Chance Snow

  • Saturday

    Saturday: A 30 percent chance of snow. Mostly sunny, with a high near 56. West wind 13 to 21 mph, with gusts as high as 34 mph. Little or no snow accumulation expected.

    High: 56 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow. Partly cloudy, with a low around 39. West wind 14 to 17 mph, with gusts as high as 30 mph. Little or no snow accumulation expected.

    Low: 39 °F

    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow. Mostly sunny, with a high near 60. Windy, with a west wind 17 to 22 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 44 mph. Little or no snow accumulation expected.

    High: 60 °F

    Chance Snow
    and Windy

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 27. Breezy, with a west northwest wind 19 to 24 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 40 mph. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance Snow
    and Breezy

  • Monday

    Monday: A 50 percent chance of snow. Mostly cloudy, with a high near 39. West northwest wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Chance Snow

  • Monday Night

    Monday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 19. West northwest wind 12 to 17 mph decreasing to 6 to 11 mph in the evening. Winds could gust as high as 29 mph. Little or no snow accumulation expected.

    Low: 19 °F

    Chance Snow

  • Tuesday

    Tuesday: A chance of snow. Partly sunny, with a high near 36. West northwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 36 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A chance of snow. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Chance Snow

Detailed Forecast

Overnight
A 30 percent chance of snow. Partly cloudy, with a low around 27. West southwest wind 8 to 10 mph, with gusts as high as 18 mph. Little or no snow accumulation expected.
Saturday
A 30 percent chance of snow. Mostly sunny, with a high near 56. West wind 13 to 21 mph, with gusts as high as 34 mph. Little or no snow accumulation expected.
Saturday Night
A 30 percent chance of snow. Partly cloudy, with a low around 39. West wind 14 to 17 mph, with gusts as high as 30 mph. Little or no snow accumulation expected.
Sunday
A 30 percent chance of snow. Mostly sunny, with a high near 60. Windy, with a west wind 17 to 22 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 44 mph. Little or no snow accumulation expected.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 27. Breezy, with a west northwest wind 19 to 24 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 40 mph. New snow accumulation of less than a half inch possible.
Monday
A 50 percent chance of snow. Mostly cloudy, with a high near 39. West northwest wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph. New snow accumulation of less than a half inch possible.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 19. West northwest wind 12 to 17 mph decreasing to 6 to 11 mph in the evening. Winds could gust as high as 29 mph. Little or no snow accumulation expected.
Tuesday
A chance of snow. Partly sunny, with a high near 36. West northwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 18.
Wednesday
A chance of snow. Partly sunny, with a high near 42. Breezy.
Wednesday Night
A chance of snow. Cloudy, with a low around 31.
Thursday
A chance of snow. Cloudy, with a high near 53. Windy.
Thursday Night
A chance of snow. Cloudy, with a low around 23. Breezy.
Friday
A chance of snow. Cloudy, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
1:24 am MST Mar 7, 2026
Forecast Valid:
1am MST Mar 7, 2026-6pm MDT Mar 13, 2026
 
Forecast Discussion
 
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