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

Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

A major winter storm is expected to bring heavy snow, strong winds, and coastal flooding across the Mid-Atlantic and Northeast that may cause impossible travel conditions and power outages. Blizzard conditions are possible along the Northeastern Seaboard. Wet weather and strong winds return to the Pacific Northwest and north-central California. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

48°F

9°C

Humidity 45%
Wind Speed SW 18 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 23 Feb 02:54 PM MST
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: A slight chance of rain before 11pm, then a chance of rain and snow between 11pm and 2am, then snow likely after 2am. Cloudy, with a low around 27. West wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Tuesday

    Tuesday: A chance of snow before 3pm, then a slight chance of snow after 4pm. Mostly cloudy, with a high near 40. West wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow likely before 11pm, then a chance of rain and snow. Mostly cloudy, with a steady temperature around 33. West southwest wind 8 to 13 mph becoming south in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of snow before 11am. Mostly sunny, with a high near 44. Windy, with a west wind 18 to 23 mph increasing to 27 to 32 mph in the morning. Winds could gust as high as 45 mph.

    High: 44 °F

    Windy. Slight
    Chance Snow
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 28. West wind 18 to 21 mph, with gusts as high as 32 mph.

    Low: 28 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 49. Windy, with a west wind 17 to 22 mph increasing to 26 to 31 mph in the afternoon. Winds could gust as high as 45 mph.

    High: 49 °F

    Mostly Sunny
    and Windy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. Breezy, with a west wind 18 to 26 mph, with gusts as high as 40 mph.

    Low: 28 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 41. Northwest wind 16 to 20 mph, with gusts as high as 31 mph.

    High: 41 °F

    Chance Snow

  • Friday Night

    Friday Night: Snow likely. Mostly cloudy, with a low around 9.

    Low: 9 °F

    Snow Likely

Detailed Forecast

Tonight
A slight chance of rain before 11pm, then a chance of rain and snow between 11pm and 2am, then snow likely after 2am. Cloudy, with a low around 27. West wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
A chance of snow before 3pm, then a slight chance of snow after 4pm. Mostly cloudy, with a high near 40. West wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow likely before 11pm, then a chance of rain and snow. Mostly cloudy, with a steady temperature around 33. West southwest wind 8 to 13 mph becoming south in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
A 20 percent chance of snow before 11am. Mostly sunny, with a high near 44. Windy, with a west wind 18 to 23 mph increasing to 27 to 32 mph in the morning. Winds could gust as high as 45 mph.
Wednesday Night
Mostly clear, with a low around 28. West wind 18 to 21 mph, with gusts as high as 32 mph.
Thursday
Mostly sunny, with a high near 49. Windy, with a west wind 17 to 22 mph increasing to 26 to 31 mph in the afternoon. Winds could gust as high as 45 mph.
Thursday Night
Partly cloudy, with a low around 28. Breezy, with a west wind 18 to 26 mph, with gusts as high as 40 mph.
Friday
A chance of snow. Mostly cloudy, with a high near 41. Northwest wind 16 to 20 mph, with gusts as high as 31 mph.
Friday Night
Snow likely. Mostly cloudy, with a low around 9.
Saturday
A chance of snow. Mostly cloudy, with a high near 25.
Saturday Night
A slight chance of snow. Mostly cloudy, with a low around 10.
Sunday
Mostly sunny, with a high near 36.
Sunday Night
Partly cloudy, with a low around 18.
Monday
Mostly sunny, with a high near 43.
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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:
1:27 pm MST Feb 23, 2026
Forecast Valid:
3pm MST Feb 23, 2026-6pm MST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation