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PNS25-72: Soliciting Comments through December 19, 2025 on the Discontinuation of the Max/Min Temperature and Precipitation Table Product (RTP) for all NWS Alaska Region, Eastern Region, and Western Region Offices.

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Hazardous Weather Conditions

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Mostly Cloudy

30°F

-1°C

Humidity 92%
Wind Speed SW 11 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 09 Dec 04:05 PM MST
Extended Forecast for

Lewistown MT

Winter Storm Watch December 11, 02:00pm until December 13, 05:00am
Click here for hazard details and duration
Winter Storm Watch

  • This Afternoon

    This Afternoon: A 20 percent chance of snow. Mostly sunny, with a steady temperature around 36. West northwest wind around 21 mph, with gusts as high as 33 mph.

    High: 36 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: A 30 percent chance of snow, mainly after 4am. Increasing clouds, with a low around 23. West wind 6 to 14 mph becoming south southeast after midnight. Winds could gust as high as 26 mph. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Partly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Rain and snow before 11am, then a chance of rain. High near 49. South wind 11 to 21 mph becoming west in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 49 °F

    Rain/Snow
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 2am, then a chance of rain and snow. Cloudy, with a low around 37. West wind around 17 mph, with gusts as high as 32 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 37 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow before 8am, then rain between 8am and 2pm, then rain and snow after 2pm. High near 49. West wind 15 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 49 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Snow. Low around 6. Northwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 6 °F

    Snow

  • Friday

    Friday: Snow. The snow could be heavy at times. High near 17. Light and variable wind becoming east around 6 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    High: 17 °F

    Heavy Snow

  • Friday Night

    Friday Night: Snow likely. Cloudy, with a low around -3. East wind around 7 mph becoming west northwest after midnight.

    Low: -3 °F

    Snow Likely

  • Saturday

    Saturday: A chance of snow, mainly before 11am. Mostly cloudy, with a high near 22.

    High: 22 °F

    Chance Snow

Detailed Forecast

This Afternoon
A 20 percent chance of snow. Mostly sunny, with a steady temperature around 36. West northwest wind around 21 mph, with gusts as high as 33 mph.
Tonight
A 30 percent chance of snow, mainly after 4am. Increasing clouds, with a low around 23. West wind 6 to 14 mph becoming south southeast after midnight. Winds could gust as high as 26 mph. New snow accumulation of less than a half inch possible.
Wednesday
Rain and snow before 11am, then a chance of rain. High near 49. South wind 11 to 21 mph becoming west in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain before 2am, then a chance of rain and snow. Cloudy, with a low around 37. West wind around 17 mph, with gusts as high as 32 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Thursday
A chance of rain and snow before 8am, then rain between 8am and 2pm, then rain and snow after 2pm. High near 49. West wind 15 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow. Low around 6. Northwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Friday
Snow. The snow could be heavy at times. High near 17. Light and variable wind becoming east around 6 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Friday Night
Snow likely. Cloudy, with a low around -3. East wind around 7 mph becoming west northwest after midnight.
Saturday
A chance of snow, mainly before 11am. Mostly cloudy, with a high near 22.
Saturday Night
Mostly cloudy, with a low around 8.
Sunday
Partly sunny, with a high near 45.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 43.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
A chance of rain and snow. Mostly sunny, with a high near 47.
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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:
3:36 pm MST Dec 9, 2025
Forecast Valid:
4pm MST Dec 9, 2025-6pm MST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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