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

24°F

-4°C

Humidity 92%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 18 Apr 12:30 AM MDT
Extended Forecast for

Marysville MT

  • Overnight

    Overnight: A 20 percent chance of snow before 1am. Mostly clear, with a low around 25. West wind around 11 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: Sunny, with a high near 50. West wind 10 to 13 mph, with gusts as high as 24 mph.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33. West southwest wind 6 to 13 mph, with gusts as high as 22 mph.

    Low: 33 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60. West southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. West southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 66. West southwest wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. West wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 71. South wind 6 to 13 mph, with gusts as high as 24 mph.

    High: 71 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain before midnight. Partly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow before 1am. Mostly clear, with a low around 25. West wind around 11 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 50. West wind 10 to 13 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 33. West southwest wind 6 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 60. West southwest wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 41. West southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 66. West southwest wind 6 to 11 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 43. West wind 6 to 11 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 71. South wind 6 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
A slight chance of rain before midnight. Partly cloudy, with a low around 45.
Wednesday
A chance of rain, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 56.
Wednesday Night
Rain and snow. Cloudy, with a low around 32.
Thursday
Snow. Mostly cloudy, with a high near 37.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 25.
Friday
A chance of snow. Partly sunny, with a high near 40.
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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:
12:31 am MDT Apr 18, 2026
Forecast Valid:
12am MDT Apr 18, 2026-6pm MDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation