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

Sieben I-15 MP 216 (MTSBN)

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

NA

35°F

2°C

Humidity NA
Wind Speed NNE 2 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

Marysville MT

  • Today

    Today: A chance of rain and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 51. Light and variable wind becoming north northeast 5 to 10 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 51 °F

    Mostly Sunny
    then Showers

  • Tonight

    Tonight: Rain and snow before 2am, then a chance of rain between 2am and 3am, then rain and snow likely after 3am. Some thunder is also possible. Low around 36. North northeast wind 6 to 10 mph becoming west southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 36 °F

    Showers then
    Rain/Snow
    Likely

  • Monday

    Monday: Rain and snow, becoming all rain after 3pm. High near 46. West southwest wind 7 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 46 °F

    Rain/Snow

  • Monday Night

    Monday Night: A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 34. West wind 15 to 18 mph, with gusts as high as 31 mph.

    Low: 34 °F

    Chance Rain
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 48. Breezy, with a west southwest wind 14 to 22 mph, with gusts as high as 38 mph.

    High: 48 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain and snow after midnight. Mostly cloudy, with a low around 35. Breezy, with a southwest wind 13 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 35 °F

    Mostly Cloudy
    and Breezy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Snow before 3pm, then rain and snow. High near 45. West southwest wind 13 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Snow Likely
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow. Mostly cloudy, with a low around 26. Breezy, with a west wind 18 to 24 mph, with gusts as high as 39 mph.

    Low: 26 °F

    Snow and
    Breezy

  • Thursday

    Thursday: Snow. Cloudy, with a high near 33. Breezy.

    High: 33 °F

    Snow and
    Breezy

Detailed Forecast

Today
A chance of rain and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 51. Light and variable wind becoming north northeast 5 to 10 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain and snow before 2am, then a chance of rain between 2am and 3am, then rain and snow likely after 3am. Some thunder is also possible. Low around 36. North northeast wind 6 to 10 mph becoming west southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday
Rain and snow, becoming all rain after 3pm. High near 46. West southwest wind 7 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 34. West wind 15 to 18 mph, with gusts as high as 31 mph.
Tuesday
Partly sunny, with a high near 48. Breezy, with a west southwest wind 14 to 22 mph, with gusts as high as 38 mph.
Tuesday Night
A chance of rain and snow after midnight. Mostly cloudy, with a low around 35. Breezy, with a southwest wind 13 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday
Snow before 3pm, then rain and snow. High near 45. West southwest wind 13 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow. Mostly cloudy, with a low around 26. Breezy, with a west wind 18 to 24 mph, with gusts as high as 39 mph.
Thursday
Snow. Cloudy, with a high near 33. Breezy.
Thursday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 22.
Friday
A chance of snow. Partly sunny, with a high near 40.
Friday Night
A slight chance of snow. Partly cloudy, with a low around 25.
Saturday
A slight chance of snow. Mostly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marysville MT
 46.75°N 112.29°W (Elev. 5456 ft)
Last Update:
3:26 am MDT Apr 12, 2026
Forecast Valid:
5am MDT Apr 12, 2026-6pm MDT Apr 18, 2026
 
Forecast Discussion
 
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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