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

65°F

18°C

Humidity 70%
Wind Speed ESE 5 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Last update 02 Aug 09:30 PM MDT
Extended Forecast for

Marysville MT

  • Tonight

    Tonight: Partly cloudy, with a low around 56. West southwest wind around 10 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 75. West wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55. West wind 5 to 9 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 74 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 52. West wind around 9 mph. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71. West southwest wind 10 to 13 mph, with gusts as high as 24 mph.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 55. West southwest wind 6 to 11 mph, with gusts as high as 22 mph.

    Low: 55 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. West southwest wind around 10 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 75. West wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 55. West wind 5 to 9 mph, with gusts as high as 18 mph.
Monday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. Calm wind becoming east 5 to 7 mph in the afternoon.
Monday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 52. West wind around 9 mph. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 71. West southwest wind 10 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 55. West southwest wind 6 to 11 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 75. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly cloudy, with a low around 55.
Thursday
Partly sunny, with a high near 70.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 67.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Saturday
A slight chance of showers. Mostly sunny, with a high near 66.
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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:
8:21 pm MDT Aug 2, 2025
Forecast Valid:
9pm MDT Aug 2, 2025-6pm MDT Aug 9, 2025
 
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