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

55°F

13°C

Humidity 29%
Wind Speed WNW 16 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Last update 14 Apr 03:30 PM MDT
Extended Forecast for

Marysville MT

  • Tonight

    Tonight: A 20 percent chance of snow showers after 5am. Mostly cloudy, with a low around 34. Breezy, with a west southwest wind 18 to 23 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 38 mph.

    Low: 34 °F

    Mostly Cloudy
    and Breezy
    then Slight
    Chance Snow
    Showers

  • Wednesday

    Wednesday: A chance of rain and snow showers before 2pm, then rain showers. High near 48. West southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 48 °F

    Chance
    Rain/Snow
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow showers, becoming all snow after 9pm. Low around 24. West wind 15 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 24 °F

    Rain/Snow
    then Snow
    Showers
    Likely

  • Thursday

    Thursday: Snow showers. High near 32. Northwest wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 32 °F

    Snow Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of snow showers. Mostly cloudy, with a low around 21. West wind 10 to 16 mph, with gusts as high as 29 mph. New snow accumulation of less than one inch possible.

    Low: 21 °F

    Chance Snow
    Showers

  • Friday

    Friday: Snow, mainly between noon and 3pm, then snow showers after 3pm. Some thunder is also possible. High near 37. West wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 37 °F

    Chance Snow
    then Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow before midnight. Partly cloudy, with a low around 24. North northwest wind 9 to 14 mph becoming west southwest after midnight. Winds could gust as high as 25 mph. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Chance Snow
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 48. West southwest wind 9 to 14 mph, with gusts as high as 26 mph.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of snow showers after 5am. Mostly cloudy, with a low around 34. Breezy, with a west southwest wind 18 to 23 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 38 mph.
Wednesday
A chance of rain and snow showers before 2pm, then rain showers. High near 48. West southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
Rain and snow showers, becoming all snow after 9pm. Low around 24. West wind 15 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Thursday
Snow showers. High near 32. Northwest wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
A 50 percent chance of snow showers. Mostly cloudy, with a low around 21. West wind 10 to 16 mph, with gusts as high as 29 mph. New snow accumulation of less than one inch possible.
Friday
Snow, mainly between noon and 3pm, then snow showers after 3pm. Some thunder is also possible. High near 37. West wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday Night
A 30 percent chance of snow before midnight. Partly cloudy, with a low around 24. North northwest wind 9 to 14 mph becoming west southwest after midnight. Winds could gust as high as 25 mph. New snow accumulation of less than a half inch possible.
Saturday
Sunny, with a high near 48. West southwest wind 9 to 14 mph, with gusts as high as 26 mph.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 38.
Monday
A chance of rain. Partly sunny, with a high near 61.
Monday Night
A chance of rain. Mostly cloudy, with a low around 39.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 56.
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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:
1:12 pm MDT Apr 14, 2026
Forecast Valid:
3pm MDT Apr 14, 2026-6pm MDT Apr 21, 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