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

Storm Impacting the Southwest U.S.

A slow moving weather disturbance will continue to bring periodic rain showers, a few isolated thunderstorms, and a localized flash flooding across the Southwest. The threat will expand into the Southern Plains Wednesday night. Moderate to heavy snow across the Sierra Nevada and southern Utah Ranges will continue into the overnight period. Read More >

Current conditions at

Sieben I-15 MP 216 (MTSBN)

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

NA

45°F

7°C

Humidity 65%
Wind Speed NNW 5 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 18 Nov 11:45 PM MST
Extended Forecast for

Marysville MT

  • Overnight

    Overnight: A slight chance of rain and snow before 2am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 30. West wind around 7 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 40 percent chance of snow, mainly before noon. Mostly cloudy, then gradually becoming sunny, with a high near 36. North northwest wind around 5 mph becoming light and variable in the afternoon. Little or no snow accumulation expected.

    High: 36 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 29. Calm wind becoming southwest around 5 mph in the evening.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 43. Southwest wind around 6 mph.

    High: 43 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31. West southwest wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 41. West southwest wind 11 to 14 mph, with gusts as high as 26 mph.

    High: 41 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. West southwest wind 13 to 18 mph, with gusts as high as 32 mph.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of snow before 11am, then a slight chance of rain and snow between 11am and 2pm, then a slight chance of rain after 2pm. Mostly sunny, with a high near 43. West southwest wind 13 to 17 mph, with gusts as high as 29 mph.

    High: 43 °F

    Slight Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of rain before 8pm, then a chance of rain and snow between 8pm and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
A slight chance of rain and snow before 2am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 30. West wind around 7 mph. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of snow, mainly before noon. Mostly cloudy, then gradually becoming sunny, with a high near 36. North northwest wind around 5 mph becoming light and variable in the afternoon. Little or no snow accumulation expected.
Wednesday Night
Mostly clear, with a low around 29. Calm wind becoming southwest around 5 mph in the evening.
Thursday
Sunny, with a high near 43. Southwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 31. West southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 41. West southwest wind 11 to 14 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 33. West southwest wind 13 to 18 mph, with gusts as high as 32 mph.
Saturday
A slight chance of snow before 11am, then a slight chance of rain and snow between 11am and 2pm, then a slight chance of rain after 2pm. Mostly sunny, with a high near 43. West southwest wind 13 to 17 mph, with gusts as high as 29 mph.
Saturday Night
A slight chance of rain before 8pm, then a chance of rain and snow between 8pm and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 35.
Sunday
A chance of snow before 11am, then a chance of rain and snow. Partly sunny, with a high near 44.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 34.
Monday
A chance of snow. Partly sunny, with a high near 43.
Monday Night
A chance of snow. Mostly cloudy, with a low around 24.
Tuesday
Snow likely. Partly sunny, with a high near 26.
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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:
9:48 pm MST Nov 18, 2025
Forecast Valid:
12am MST Nov 19, 2025-6pm MST Nov 25, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation