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

Sieben I-15 MP 216 (MTSBN)

Lat: 46.88748267°NLon: 112.1111196°WElev: 4199.0ft.

NA

41°F

5°C

Humidity 48%
Wind Speed ESE 11 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 01 Jan 01:45 PM MST
Extended Forecast for

Marysville MT

  • New Year's Day

    New Year's Day: A 10 percent chance of snow after 5pm. Mostly cloudy, with a high near 38. West southwest wind around 8 mph.

    High: 38 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: A chance of snow before 4am, then a chance of rain and snow. Cloudy, with a low around 33. West southwest wind 8 to 10 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Friday

    Friday: A chance of rain and snow before 11am, then a slight chance of rain. Mostly cloudy, with a high near 41. West southwest wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 41 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. Southwest wind 10 to 13 mph, with gusts as high as 26 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 41. South southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    High: 41 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain before 8pm, then a chance of rain and snow. Mostly cloudy, with a low around 34. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 41. South southwest wind around 15 mph, with gusts as high as 28 mph.

    High: 41 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of snow. Partly cloudy, with a low around 32. Southwest wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 32 °F

    Slight Chance
    Snow

  • Monday

    Monday: A chance of snow. Partly sunny, with a high near 39.

    High: 39 °F

    Chance Snow

Detailed Forecast

New Year's Day
A 10 percent chance of snow after 5pm. Mostly cloudy, with a high near 38. West southwest wind around 8 mph.
Tonight
A chance of snow before 4am, then a chance of rain and snow. Cloudy, with a low around 33. West southwest wind 8 to 10 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Friday
A chance of rain and snow before 11am, then a slight chance of rain. Mostly cloudy, with a high near 41. West southwest wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday Night
Mostly cloudy, with a low around 33. Southwest wind 10 to 13 mph, with gusts as high as 26 mph.
Saturday
Mostly sunny, with a high near 41. South southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of rain before 8pm, then a chance of rain and snow. Mostly cloudy, with a low around 34. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
Mostly sunny, with a high near 41. South southwest wind around 15 mph, with gusts as high as 28 mph.
Sunday Night
A slight chance of snow. Partly cloudy, with a low around 32. Southwest wind 11 to 14 mph, with gusts as high as 24 mph.
Monday
A chance of snow. Partly sunny, with a high near 39.
Monday Night
A chance of snow. Mostly cloudy, with a low around 29.
Tuesday
A slight chance of snow. Partly sunny, with a high near 35.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 29.
Wednesday
A slight chance of snow. Partly sunny, with a high near 34.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marysville MT
 46.75°N 112.29°W (Elev. 5456 ft)
Last Update:
3:32 am MST Jan 1, 2026
Forecast Valid:
2pm MST Jan 1, 2026-6pm MST Jan 7, 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