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

51°F

11°C

Humidity 43%
Wind Speed SSE 2 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Last update 10 Apr 09:30 PM MDT
Extended Forecast for

Marysville MT

  • Tonight

    Tonight: A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 43. Southwest wind 6 to 8 mph.

    Low: 43 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 61. Southwest wind 8 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.

    High: 61 °F

    Partly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely before midnight, then a slight chance of rain after midnight. Cloudy, then gradually becoming partly cloudy, with a low around 38. Southwest wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 38 °F

    Showers
    Likely then
    Slight Chance
    Rain

  • Sunday

    Sunday: Rain, mainly between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 53. Southwest wind 6 to 9 mph becoming east in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%.

    High: 53 °F

    Slight Chance
    Rain then
    Showers

  • Sunday Night

    Sunday Night: Rain. Low around 37. North northeast wind 7 to 10 mph becoming west southwest after midnight. Chance of precipitation is 90%.

    Low: 37 °F

    Rain then
    Rain Likely

  • Monday

    Monday: Rain, possibly mixed with snow, becoming all rain after noon. High near 45. West southwest wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow
    then Rain

  • Monday Night

    Monday Night: A chance of rain before 9pm, then a chance of snow between 9pm and midnight. Mostly cloudy, with a low around 33. West southwest wind 16 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: A slight chance of snow. Mostly sunny, with a high near 47. Breezy, with a west southwest wind 15 to 24 mph, with gusts as high as 41 mph.

    High: 47 °F

    Slight Chance
    Snow and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of snow after midnight. Mostly cloudy, with a low around 36. Breezy.

    Low: 36 °F

    Partly Cloudy
    and Breezy
    then Chance
    Snow

Detailed Forecast

Tonight
A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 43. Southwest wind 6 to 8 mph.
Saturday
A chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 61. Southwest wind 8 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely before midnight, then a slight chance of rain after midnight. Cloudy, then gradually becoming partly cloudy, with a low around 38. Southwest wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Sunday
Rain, mainly between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 53. Southwest wind 6 to 9 mph becoming east in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%.
Sunday Night
Rain. Low around 37. North northeast wind 7 to 10 mph becoming west southwest after midnight. Chance of precipitation is 90%.
Monday
Rain, possibly mixed with snow, becoming all rain after noon. High near 45. West southwest wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
A chance of rain before 9pm, then a chance of snow between 9pm and midnight. Mostly cloudy, with a low around 33. West southwest wind 16 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tuesday
A slight chance of snow. Mostly sunny, with a high near 47. Breezy, with a west southwest wind 15 to 24 mph, with gusts as high as 41 mph.
Tuesday Night
A chance of snow after midnight. Mostly cloudy, with a low around 36. Breezy.
Wednesday
Snow. Mostly cloudy, with a high near 45. Breezy.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 27. Breezy.
Thursday
Snow likely. Mostly cloudy, with a high near 35.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 24.
Friday
A chance of snow. Partly sunny, with a high near 41.
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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:
9:42 pm MDT Apr 10, 2026
Forecast Valid:
9pm MDT Apr 10, 2026-6pm MDT Apr 17, 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