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

38°F

3°C

Humidity 45%
Wind Speed WNW 19 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Wind Chill28°F (-2°C)
Last update 17 Apr 10:45 AM MDT
Extended Forecast for

Marysville MT

  • Today

    Today: Snow showers likely, mainly after 3pm. Some thunder is also possible. Mostly cloudy, with a high near 35. West northwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.

    High: 35 °F

    Snow Showers
    Likely

  • Tonight

    Tonight: A 30 percent chance of snow showers, mainly before 7pm. Partly cloudy, with a low around 25. West southwest wind 8 to 13 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Chance Snow
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 51. West southwest wind 10 to 13 mph, with gusts as high as 25 mph.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60. South southwest wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 66. Southwest wind 7 to 13 mph, with gusts as high as 23 mph.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. West wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

Today
Snow showers likely, mainly after 3pm. Some thunder is also possible. Mostly cloudy, with a high near 35. West northwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.
Tonight
A 30 percent chance of snow showers, mainly before 7pm. Partly cloudy, with a low around 25. West southwest wind 8 to 13 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.
Saturday
Sunny, with a high near 51. West southwest wind 10 to 13 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 32. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 60. South southwest wind 8 to 11 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 40. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 66. Southwest wind 7 to 13 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 43. West wind 7 to 11 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 45.
Wednesday
Rain likely. Partly sunny, with a high near 60.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 39.
Thursday
Rain and snow likely. Mostly cloudy, with a high near 47.
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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:
10:42 am MDT Apr 17, 2026
Forecast Valid:
11am MDT Apr 17, 2026-6pm MDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation