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

Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

46°F

8°C

Humidity 42%
Wind Speed W 6 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 30 Dec 03:20 PM MST
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: Partly cloudy, with a low around 30. Southwest wind 6 to 9 mph.

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 53. South southwest wind around 6 mph becoming calm.

    High: 53 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. South southwest wind around 7 mph.

    Low: 29 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 47. West southwest wind around 5 mph becoming calm in the morning.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 29. South southwest wind around 6 mph.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 49. West southwest wind 6 to 9 mph, with gusts as high as 18 mph.

    High: 49 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 34. South southwest wind around 10 mph.

    Low: 34 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 54. South southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 54 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 30. Southwest wind 6 to 9 mph.
Wednesday
Sunny, with a high near 53. South southwest wind around 6 mph becoming calm.
Wednesday Night
Partly cloudy, with a low around 29. South southwest wind around 7 mph.
New Year's Day
Mostly sunny, with a high near 47. West southwest wind around 5 mph becoming calm in the morning.
Thursday Night
Mostly cloudy, with a low around 29. South southwest wind around 6 mph.
Friday
Mostly cloudy, with a high near 49. West southwest wind 6 to 9 mph, with gusts as high as 18 mph.
Friday Night
Mostly cloudy, with a low around 34. South southwest wind around 10 mph.
Saturday
Partly sunny, with a high near 54. South southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Mostly sunny, with a high near 46.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 45.
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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:
2:02 pm MST Dec 30, 2025
Forecast Valid:
3pm MST Dec 30, 2025-6pm MST Jan 6, 2026
 
Forecast Discussion
 
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