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

30°F

-1°C

Humidity 66%
Wind Speed NNE 4 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Wind Chill26°F (-3°C)
Last update 16 Apr 07:15 AM MDT
Extended Forecast for

Marysville MT

  • Today

    Today: Snow showers likely, mainly after 5pm. Partly sunny, with a high near 34. West wind 15 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 34 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Tonight

    Tonight: Snow showers likely, mainly before 3am. Patchy blowing snow before 9pm. Mostly cloudy, with a low around 22. West wind 10 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 22 °F

    Snow Showers
    Likely and
    Patchy
    Blowing Snow

  • Friday

    Friday: Snow showers, mainly after noon. Some thunder is also possible. High near 37. West wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Chance Snow
    Showers then
    Snow Showers

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 25. Northwest wind 9 to 14 mph becoming west southwest after midnight. Winds could gust as high as 26 mph.

    Low: 25 °F

    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 50. West southwest wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31. Southwest wind 8 to 13 mph, with gusts as high as 24 mph.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. South southwest wind 8 to 13 mph, with gusts as high as 24 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.

    Low: 38 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

Today
Snow showers likely, mainly after 5pm. Partly sunny, with a high near 34. West wind 15 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow showers likely, mainly before 3am. Patchy blowing snow before 9pm. Mostly cloudy, with a low around 22. West wind 10 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow showers, mainly after noon. Some thunder is also possible. High near 37. West wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday Night
A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 25. Northwest wind 9 to 14 mph becoming west southwest after midnight. Winds could gust as high as 26 mph.
Saturday
Sunny, with a high near 50. West southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 31. Southwest wind 8 to 13 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 59. South southwest wind 8 to 13 mph, with gusts as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 38. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
A chance of showers. Mostly sunny, with a high near 65.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 42.
Wednesday
Showers likely. Mostly cloudy, with a high near 54.
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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:
6:31 am MDT Apr 16, 2026
Forecast Valid:
7am MDT Apr 16, 2026-6pm MDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation