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

25°F

-4°C

Humidity 84%
Wind Speed S 1 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 10 Apr 06:00 AM MDT
Extended Forecast for

Marysville MT

  • Today

    Today: Mostly sunny, with a high near 60. Light and variable wind becoming east southeast 5 to 8 mph in the morning. Winds could gust as high as 20 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain between 7pm and midnight. Mostly cloudy, with a low around 42. East wind 6 to 8 mph becoming west in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of rain before noon, then showers between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 61. Southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%.

    High: 61 °F

    Slight Chance
    Rain then
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before midnight. Mostly cloudy, with a low around 38. West southwest wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

    Low: 38 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: Rain, mainly after noon. High near 54. West southwest wind 7 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    High: 54 °F

    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain. Low around 38. West wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    Low: 38 °F

    Rain then
    Rain Likely

  • Monday

    Monday: Rain before noon, then showers and possibly a thunderstorm after noon. High near 45. West wind 6 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    High: 45 °F

    Showers

  • Monday Night

    Monday Night: A chance of rain before 9pm, then a chance of rain and snow between 9pm and midnight, then a slight chance of snow after midnight. Mostly cloudy, with a low around 34. West wind 14 to 16 mph, with gusts as high as 28 mph.

    Low: 34 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: A chance of snow, mainly before noon. Partly sunny, with a high near 47. Breezy.

    High: 47 °F

    Chance Snow
    and Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 60. Light and variable wind becoming east southeast 5 to 8 mph in the morning. Winds could gust as high as 20 mph.
Tonight
A slight chance of rain between 7pm and midnight. Mostly cloudy, with a low around 42. East wind 6 to 8 mph becoming west in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Saturday
A slight chance of rain before noon, then showers between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 61. Southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%.
Saturday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 38. West southwest wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Sunday
Rain, mainly after noon. High near 54. West southwest wind 7 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Sunday Night
Rain. Low around 38. West wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Monday
Rain before noon, then showers and possibly a thunderstorm after noon. High near 45. West wind 6 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Monday Night
A chance of rain before 9pm, then a chance of rain and snow between 9pm and midnight, then a slight chance of snow after midnight. Mostly cloudy, with a low around 34. West wind 14 to 16 mph, with gusts as high as 28 mph.
Tuesday
A chance of snow, mainly before noon. Partly sunny, with a high near 47. Breezy.
Tuesday Night
A chance of snow after midnight. Mostly cloudy, with a low around 34. Breezy.
Wednesday
Snow likely. Mostly cloudy, with a high near 44. Breezy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 28. Breezy.
Thursday
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:
4:31 am MDT Apr 10, 2026
Forecast Valid:
6am MDT Apr 10, 2026-6pm MDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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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