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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Overcast

51°F

11°C

Humidity 47%
Wind Speed WSW 23 MPH
Barometer 29.71 in (1006.1 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 02 Jan 01:54 PM MST
Extended Forecast for

Lewistown MT

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 51. West wind around 10 mph, with gusts as high as 22 mph.

    High: 51 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. West wind 5 to 9 mph becoming light and variable.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 52. Southeast wind 6 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35. South southwest wind 8 to 10 mph.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 52. West southwest wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 52 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. Southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 30 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 48. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 48 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27. West southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 51. West wind around 10 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 30. West wind 5 to 9 mph becoming light and variable.
Saturday
Mostly sunny, with a high near 52. Southeast wind 6 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 35. South southwest wind 8 to 10 mph.
Sunday
Mostly sunny, with a high near 52. West southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 30. Southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Monday
Partly sunny, with a high near 48. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around 27. West southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Mostly cloudy, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 20.
Thursday
Mostly sunny, with a high near 36.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
1:22 pm MST Jan 2, 2026
Forecast Valid:
2pm MST Jan 2, 2026-6pm MST Jan 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation