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.

Overcast

33°F

1°C

Humidity 71%
Wind Speed E 18 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 31 Mar 03:54 PM MDT
Extended Forecast for

Lewistown Municipal MT

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

  • This Afternoon

    This Afternoon: A 20 percent chance of snow before 5pm. Partly sunny, with a high near 39. East southeast wind around 11 mph, with gusts as high as 20 mph.

    High: 39 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: A 30 percent chance of snow, mainly between 10pm and midnight. Mostly cloudy, with a low around 21. East southeast wind 6 to 11 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A slight chance of rain and snow after 1pm. Mostly sunny, with a high near 50. Calm wind becoming east southeast 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 50 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A chance of rain before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 29. East southeast wind 7 to 10 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 29 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday

    Thursday: Rain, possibly mixed with snow, mainly after noon. High near 46. East wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 46 °F

    Chance
    Rain/Snow
    then
    Rain/Snow

  • Thursday Night

    Thursday Night: Rain and snow, becoming all snow after 9pm. Low around 25. North northeast wind around 15 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 25 °F

    Rain/Snow
    then Snow

  • Friday

    Friday: Snow likely, mainly before noon. Mostly cloudy, with a high near 40. Northwest wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 40 °F

    Snow Likely
    then Chance
    Snow

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. Northwest wind 5 to 7 mph becoming south southwest after midnight.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of snow before 5pm. Partly sunny, with a high near 39. East southeast wind around 11 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of snow, mainly between 10pm and midnight. Mostly cloudy, with a low around 21. East southeast wind 6 to 11 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Wednesday
A slight chance of rain and snow after 1pm. Mostly sunny, with a high near 50. Calm wind becoming east southeast 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
A chance of rain before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 29. East southeast wind 7 to 10 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Thursday
Rain, possibly mixed with snow, mainly after noon. High near 46. East wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday Night
Rain and snow, becoming all snow after 9pm. Low around 25. North northeast wind around 15 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Friday
Snow likely, mainly before noon. Mostly cloudy, with a high near 40. Northwest wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Friday Night
Partly cloudy, with a low around 25. Northwest wind 5 to 7 mph becoming south southwest after midnight.
Saturday
Sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 31.
Monday
Mostly cloudy, with a high near 54.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
12:56 pm MDT Mar 31, 2026
Forecast Valid:
4pm MDT Mar 31, 2026-6pm MDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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