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 27%
Wind Speed SSE 10 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 19 Apr 12:00 PM MDT
Extended Forecast for

Marysville MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 60. Southwest wind around 11 mph, with gusts as high as 21 mph.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 68. West southwest wind 6 to 11 mph becoming east southeast in the morning. Winds could gust as high as 22 mph.

    High: 68 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45. Northwest wind 6 to 10 mph becoming west southwest after midnight. Winds could gust as high as 21 mph.

    Low: 45 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71. Southwest wind 6 to 11 mph becoming south southeast in the afternoon. Winds could gust as high as 22 mph.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46. South wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain, then showers and possibly a thunderstorm after noon. High near 62. South wind 7 to 17 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 80%.

    High: 62 °F

    Slight Chance
    Rain then
    Showers

  • Wednesday Night

    Wednesday Night: Rain showers before 9pm, then rain and snow showers between 9pm and 3am, then snow after 3am. Some thunder is also possible. Cloudy, with a low around 31. Blustery, with a west wind 23 to 25 mph becoming north northwest after midnight. Winds could gust as high as 37 mph.

    Low: 31 °F

    Rain/Snow and
    Blustery

  • Thursday

    Thursday: Snow. Mostly cloudy, with a high near 36.

    High: 36 °F

    Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 60. Southwest wind around 11 mph, with gusts as high as 21 mph.
Tonight
Mostly cloudy, with a low around 43. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 68. West southwest wind 6 to 11 mph becoming east southeast in the morning. Winds could gust as high as 22 mph.
Monday Night
Partly cloudy, with a low around 45. Northwest wind 6 to 10 mph becoming west southwest after midnight. Winds could gust as high as 21 mph.
Tuesday
Mostly sunny, with a high near 71. Southwest wind 6 to 11 mph becoming south southeast in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 46. South wind 8 to 11 mph, with gusts as high as 22 mph.
Wednesday
A slight chance of rain, then showers and possibly a thunderstorm after noon. High near 62. South wind 7 to 17 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 80%.
Wednesday Night
Rain showers before 9pm, then rain and snow showers between 9pm and 3am, then snow after 3am. Some thunder is also possible. Cloudy, with a low around 31. Blustery, with a west wind 23 to 25 mph becoming north northwest after midnight. Winds could gust as high as 37 mph.
Thursday
Snow. Mostly cloudy, with a high near 36.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 24.
Friday
A chance of snow. Partly sunny, with a high near 36.
Friday Night
A chance of snow. Mostly cloudy, with a low around 24.
Saturday
A chance of snow. Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marysville MT
 46.75°N 112.29°W (Elev. 5456 ft)
Last Update:
11:17 am MDT Apr 19, 2026
Forecast Valid:
12pm MDT Apr 19, 2026-6pm MDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation