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

Severe Thunderstorm Outbreak and Risk of Flooding Today into Tonight

An outbreak of severe thunderstorms is expected from the lower Mississippi Valley toward the lower Ohio Valley this afternoon and evening. Tornadoes, strong to potentially intense, as well as damaging winds and hail are expected. Heavy to excessive rain from training thunderstorms in this area may lead to flooding. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167ft.

Mostly Cloudy

37°F

3°C

Humidity 64%
Wind Speed N 10 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 24 Mar 06:35 PM MDT
Extended Forecast for

Lewistown MT

  • Tonight

    Tonight: A chance of snow before 10pm, then a chance of snow after midnight. Mostly cloudy, with a low around 23. Northwest wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. Total nighttime snow accumulation of less than a half inch possible.

    Chance Snow

    Low: 23 °F

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before 11am. Cloudy, with a high near 33. Northwest wind around 10 mph. New snow accumulation of less than one inch possible.

    Chance Snow

    High: 33 °F

  • Saturday
    Night

    Saturday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 20. North northeast wind 5 to 9 mph becoming west southwest after midnight.

    Slight Chance
    Snow

    Low: 20 °F

  • Sunday

    Sunday: A 50 percent chance of snow, mainly after noon. Cloudy, with a high near 33. West northwest wind 6 to 10 mph becoming north in the afternoon. New snow accumulation of less than a half inch possible.

    Slight Chance
    Snow then
    Chance Snow

    High: 33 °F

  • Sunday
    Night

    Sunday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. North wind 8 to 13 mph. New snow accumulation of less than a half inch possible.

    Chance Snow

    Low: 15 °F

  • Monday

    Monday: A 20 percent chance of snow. Mostly cloudy, with a high near 30. North northwest wind 7 to 9 mph becoming west in the afternoon.

    Slight Chance
    Snow

    High: 30 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 15. South wind 8 to 10 mph.

    Mostly Cloudy

    Low: 15 °F

  • Tuesday

    Tuesday: Partly sunny, with a high near 33. South southwest wind 7 to 10 mph becoming north in the afternoon.

    Partly Sunny

    High: 33 °F

  • Tuesday
    Night

    Tuesday Night: A chance of snow. Mostly cloudy, with a low around 16.

    Chance Snow

    Low: 16 °F

Detailed Forecast

Tonight
A chance of snow before 10pm, then a chance of snow after midnight. Mostly cloudy, with a low around 23. Northwest wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
A 40 percent chance of snow, mainly before 11am. Cloudy, with a high near 33. Northwest wind around 10 mph. New snow accumulation of less than one inch possible.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 20. North northeast wind 5 to 9 mph becoming west southwest after midnight.
Sunday
A 50 percent chance of snow, mainly after noon. Cloudy, with a high near 33. West northwest wind 6 to 10 mph becoming north in the afternoon. New snow accumulation of less than a half inch possible.
Sunday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. North wind 8 to 13 mph. New snow accumulation of less than a half inch possible.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 30. North northwest wind 7 to 9 mph becoming west in the afternoon.
Monday Night
Mostly cloudy, with a low around 15. South wind 8 to 10 mph.
Tuesday
Partly sunny, with a high near 33. South southwest wind 7 to 10 mph becoming north in the afternoon.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 16.
Wednesday
A chance of snow. Mostly cloudy, with a high near 30.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 15.
Thursday
A slight chance of snow. Partly sunny, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 18.
Friday
Partly sunny, with a high near 42.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
4:37 pm MDT Mar 24, 2023
Forecast Valid:
7pm MDT Mar 24, 2023-6pm MDT Mar 31, 2023
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation