National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Sieben I-15 MP 216 (MTSBN)

Lat: 46.88748267°NLon: 112.1111196°WElev: 4199.0ft.

NA

42°F

6°C

Humidity 77%
Wind Speed SE 2 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 04 Oct 03:45 AM MDT
Extended Forecast for

Marysville MT

  • Today

    Today: Sunny, with a high near 72. West southwest wind 3 to 7 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 52. Light southwest wind becoming west southwest 9 to 14 mph in the evening. Winds could gust as high as 20 mph.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72. West southwest wind 13 to 17 mph, with gusts as high as 30 mph.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 50. West southwest wind 11 to 16 mph, with gusts as high as 25 mph.

    Low: 50 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 68. West southwest wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48. West wind around 9 mph.

    Low: 48 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 68. West southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47. West wind 6 to 8 mph.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 72. West southwest wind 3 to 7 mph.
Tonight
Partly cloudy, with a low around 52. Light southwest wind becoming west southwest 9 to 14 mph in the evening. Winds could gust as high as 20 mph.
Monday
Mostly sunny, with a high near 72. West southwest wind 13 to 17 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, with a low around 50. West southwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 68. West southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 48. West wind around 9 mph.
Wednesday
Sunny, with a high near 68. West southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 47. West wind 6 to 8 mph.
Thursday
Sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 45.
Saturday
A chance of rain and snow. Partly sunny, with a high near 50.
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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:
12:31 am MDT Oct 4, 2026
Forecast Valid:
4am MDT Oct 4, 2026-6pm MDT Oct 10, 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