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

Hazardous Weather Conditions

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

19°F

-7°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 31 Mar 02:54 AM MDT
Extended Forecast for

Lewistown MT

Winter Storm Watch April 2, 12:00pm until April 3, 12:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Overnight

    Overnight: Partly cloudy, with a low around 14. Light east southeast wind.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly between noon and 5pm. Partly sunny, with a high near 37. Light east southeast wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Partly Sunny
    then Chance
    Snow

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow before 8pm. Mostly cloudy, with a low around 23. Southeast wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 21 mph.

    Low: 23 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 53. Calm wind becoming east around 6 mph in the afternoon.

    High: 53 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 30. East southeast wind 6 to 10 mph.

    Low: 30 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before noon, then rain, possibly mixed with snow. High near 47. East northeast wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 47 °F

    Chance Rain
    then
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow, possibly mixed with rain, becoming all snow after midnight. Low around 25. Northeast wind 10 to 13 mph becoming north northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 25 °F

    Rain/Snow
    then Snow

  • Friday

    Friday: Snow likely, mainly before noon. Mostly cloudy, with a high near 39. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 39 °F

    Snow Likely

  • Friday Night

    Friday Night: A slight chance of snow before midnight. Partly cloudy, with a low around 22.

    Low: 22 °F

    Slight Chance
    Snow then
    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 14. Light east southeast wind.
Tuesday
A 30 percent chance of snow, mainly between noon and 5pm. Partly sunny, with a high near 37. Light east southeast wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.
Tuesday Night
A 20 percent chance of snow before 8pm. Mostly cloudy, with a low around 23. Southeast wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 21 mph.
Wednesday
Mostly sunny, with a high near 53. Calm wind becoming east around 6 mph in the afternoon.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 30. East southeast wind 6 to 10 mph.
Thursday
A chance of rain before noon, then rain, possibly mixed with snow. High near 47. East northeast wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
Snow, possibly mixed with rain, becoming all snow after midnight. Low around 25. Northeast wind 10 to 13 mph becoming north northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow likely, mainly before noon. Mostly cloudy, with a high near 39. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.
Friday Night
A slight chance of snow before midnight. Partly cloudy, with a low around 22.
Saturday
Sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 28.
Monday
Partly sunny, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
12:31 am MDT Mar 31, 2026
Forecast Valid:
3am MDT Mar 31, 2026-6pm MDT Apr 6, 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