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Snowy, Very Cold and Windy from the Northern Plains to Great Lakes; Critical Fire Weather in South Texas

Moderate to heavy lake effect snow is expected downwind of the Great Lakes, with the Chicago metro potentially receiving 6 to 12 inches of snowfall. A frigid airmass will bring very cold temperatures to the Central U.S. and Mississippi Valley today, migrating into the Eastern U.S. on Monday. Dry and windy weather will bring critical fire weather conditions to South Texas today. 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 27%
Wind Speed ENE 4 MPH
Barometer 30.37 in (1028.45 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 09 Nov 10:54 AM MST
Extended Forecast for

Lewistown MT

  • Today

    Today: Mostly sunny, with a high near 52. East southeast wind 3 to 6 mph.

    High: 52 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 34. South southwest wind 7 to 9 mph.

    Low: 34 °F

    Increasing
    Clouds

  • Monday

    Monday: Increasing clouds, with a high near 66. South wind 10 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 66 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West wind around 14 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Decreasing
    Clouds

  • Veterans Day

    Veterans Day: Sunny, with a high near 57. West northwest wind 11 to 18 mph, with gusts as high as 26 mph.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 31. West northwest wind 5 to 8 mph becoming light and variable in the evening.

    Low: 31 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 60. South wind around 5 mph becoming light and variable.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 39. South wind 5 to 7 mph.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 52. East southeast wind 3 to 6 mph.
Tonight
Increasing clouds, with a low around 34. South southwest wind 7 to 9 mph.
Monday
Increasing clouds, with a high near 66. South wind 10 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West wind around 14 mph, with gusts as high as 25 mph.
Veterans Day
Sunny, with a high near 57. West northwest wind 11 to 18 mph, with gusts as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 31. West northwest wind 5 to 8 mph becoming light and variable in the evening.
Wednesday
Partly sunny, with a high near 60. South wind around 5 mph becoming light and variable.
Wednesday Night
Mostly cloudy, with a low around 39. South wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Mostly cloudy, with a low around 40.
Friday
A slight chance of rain and snow. Mostly cloudy, with a high near 56.
Friday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 48.
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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:
9:24 am MST Nov 9, 2025
Forecast Valid:
11am MST Nov 9, 2025-6pm MST Nov 15, 2025
 
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