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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

Sieben I-15 MP 216 (MTSBN)

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

NA

33°F

1°C

Humidity 77%
Wind Speed WNW 3 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 12 Oct 01:15 PM MDT
Extended Forecast for

Marysville MT

  • Columbus Day

    Columbus Day: A 20 percent chance of snow before 5pm. Mostly cloudy, with a high near 32. East northeast wind around 6 mph becoming southeast.

    High: 32 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Partly cloudy, with a low around 21. South southeast wind 5 to 13 mph becoming west after midnight.

    Low: 21 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40. West wind 5 to 13 mph.

    High: 40 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 22. West southwest wind 8 to 10 mph.

    Low: 22 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 45. West southwest wind 6 to 10 mph.

    High: 45 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 37. West wind 7 to 11 mph.

    Low: 37 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 48. West northwest wind around 6 mph becoming light and variable in the morning.

    High: 48 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. Calm wind becoming southwest 5 to 7 mph in the evening.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Columbus Day
A 20 percent chance of snow before 5pm. Mostly cloudy, with a high near 32. East northeast wind around 6 mph becoming southeast.
Tonight
Partly cloudy, with a low around 21. South southeast wind 5 to 13 mph becoming west after midnight.
Tuesday
Mostly sunny, with a high near 40. West wind 5 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 22. West southwest wind 8 to 10 mph.
Wednesday
Sunny, with a high near 45. West southwest wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 37. West wind 7 to 11 mph.
Thursday
Sunny, with a high near 48. West northwest wind around 6 mph becoming light and variable in the morning.
Thursday Night
Mostly clear, with a low around 37. Calm wind becoming southwest 5 to 7 mph in the evening.
Friday
Sunny, with a high near 59.
Friday Night
Mostly clear, with a low around 42.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Sunny, with a high near 58.
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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:
12:31 pm MDT Oct 12, 2026
Forecast Valid:
1pm MDT Oct 12, 2026-6pm MDT Oct 18, 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