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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

Lat: 47.07579°NLon: 109.26247°WElev: 4723.0ft.

NA

39°F

4°C

Humidity 44%
Wind Speed SE 4 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill36°F (2°C)
Last update 01 Jan 04:30 PM MST
Extended Forecast for

9 Miles ENE Lewistown MT

  • Tonight

    Tonight: Cloudy, with a low around 31. West wind 5 to 7 mph.

    Low: 31 °F

    Cloudy

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 44. West wind 8 to 14 mph, with gusts as high as 28 mph.

    High: 44 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32. West wind 8 to 15 mph, with gusts as high as 28 mph.

    Low: 32 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 45. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36. South southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 47. West southwest wind around 14 mph, with gusts as high as 28 mph.

    High: 47 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. Southwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 44. West southwest wind 10 to 13 mph, with gusts as high as 25 mph.

    High: 44 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 31. West wind 5 to 7 mph.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 44. West wind 8 to 14 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 32. West wind 8 to 15 mph, with gusts as high as 28 mph.
Saturday
Mostly sunny, with a high near 45. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 36. South southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Sunday
Mostly sunny, with a high near 47. West southwest wind around 14 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 35. Southwest wind around 14 mph, with gusts as high as 23 mph.
Monday
Partly sunny, with a high near 44. West southwest wind 10 to 13 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 39.
Tuesday Night
Partly cloudy, with a low around 31.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
A slight chance of snow. Partly sunny, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Lewistown MT
 47.1°N 109.25°W (Elev. 5325 ft)
Last Update:
3:53 pm MST Jan 1, 2026
Forecast Valid:
4pm MST Jan 1, 2026-6pm MST Jan 8, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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