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

34°F

1°C

Humidity 59%
Wind Speed SSW 16 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 07 Mar 03:35 AM MST
Extended Forecast for

Lewistown Municipal 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: Partly cloudy, with a steady temperature around 33. Southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 55. Breezy, with a west wind 14 to 22 mph, with gusts as high as 34 mph.

    High: 55 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. West wind 16 to 18 mph, with gusts as high as 30 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 60. Windy, with a west southwest wind 18 to 23 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 44 mph.

    High: 60 °F

    Mostly Sunny
    and Windy

  • Sunday Night

    Sunday Night: A chance of rain before 11pm, then rain and snow likely between 11pm and 2am, then snow likely after 2am. Mostly cloudy, with a low around 27. Breezy, with a west northwest wind 21 to 26 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Rain/Snow
    Likely and
    Breezy

  • Monday

    Monday: A 50 percent chance of snow. Mostly cloudy, with a high near 39. West northwest wind 9 to 14 mph increasing to 16 to 21 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, mainly before 11pm. Mostly cloudy, with a low around 20. West northwest wind 9 to 18 mph, with gusts as high as 30 mph. Little or no snow accumulation expected.

    Low: 20 °F

    Chance Snow

  • Tuesday

    Tuesday: A chance of snow after 11am. Partly sunny, with a high near 36. West northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 36 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A slight chance of snow before 11pm. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 33. Southwest wind around 11 mph, with gusts as high as 21 mph.
Saturday
Partly sunny, with a high near 55. Breezy, with a west wind 14 to 22 mph, with gusts as high as 34 mph.
Saturday Night
Partly cloudy, with a low around 39. West wind 16 to 18 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 60. Windy, with a west southwest wind 18 to 23 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 44 mph.
Sunday Night
A chance of rain before 11pm, then rain and snow likely between 11pm and 2am, then snow likely after 2am. Mostly cloudy, with a low around 27. Breezy, with a west northwest wind 21 to 26 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 60%. 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 9 to 14 mph increasing to 16 to 21 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, mainly before 11pm. Mostly cloudy, with a low around 20. West northwest wind 9 to 18 mph, with gusts as high as 30 mph. Little or no snow accumulation expected.
Tuesday
A chance of snow after 11am. Partly sunny, with a high near 36. West northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
A slight chance of snow before 11pm. Mostly cloudy, with a low around 18.
Wednesday
A slight chance of snow after 11am. Partly sunny, with a high near 41. Breezy.
Wednesday Night
A chance of snow. Cloudy, with a low around 31.
Thursday
A chance of rain and snow. Cloudy, with a high near 52. Windy.
Thursday Night
Snow likely. Cloudy, with a low around 23. Breezy.
Friday
A chance of snow. Cloudy, with a high near 41. Breezy.
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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:
2:42 am MST Mar 7, 2026
Forecast Valid:
3am MST Mar 7, 2026-6pm MDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation