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

Hurricane and Storm Surge Watches Issued for the Northern Gulf Coast for Strengthening Tropical Storm Isaias

Tropical Storm Isaias is forecast to track toward the central Gulf Coast while strengthening into a hurricane on Thursday. There is an increasing risk of damaging hurricane-force winds and life-threatening storm surge impacts along portions of the northern Gulf Coast Friday into Saturday. Isaias will bring heavy rainfall to the central Gulf Coast and much of the Southeast Friday into the weekend. Read More >

Current conditions at

Sieben I-15 MP 216 (MTSBN)

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

NA

61°F

16°C

Humidity 26%
Wind Speed SE 12 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 07 Oct 11:00 AM MDT
Extended Forecast for

Marysville MT

  • Today

    Today: Sunny, with a high near 64. West wind 6 to 8 mph.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. West wind 6 to 11 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64. West wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48. West southwest wind 8 to 14 mph, with gusts as high as 18 mph.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 65. West southwest wind 13 to 21 mph, with gusts as high as 36 mph.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. West wind 13 to 15 mph, with gusts as high as 29 mph.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Rain and snow likely, mainly after noon. Partly sunny, with a high near 41. West wind 13 to 15 mph becoming north in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: Rain and snow, becoming all snow after 9pm. The snow could be heavy at times. Cloudy, with a low around 24. Blustery, with a north northeast wind 15 to 20 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 44 mph.

    Low: 24 °F

    Blustery.
    Rain/Snow
    then Heavy
    Snow

  • Sunday

    Sunday: Snow. Cloudy, with a high near 27. Blustery.

    High: 27 °F

    Snow and
    Blustery

Detailed Forecast

Today
Sunny, with a high near 64. West wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 45. West wind 6 to 11 mph.
Thursday
Sunny, with a high near 64. West wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 48. West southwest wind 8 to 14 mph, with gusts as high as 18 mph.
Friday
Mostly sunny, with a high near 65. West southwest wind 13 to 21 mph, with gusts as high as 36 mph.
Friday Night
Partly cloudy, with a low around 38. West wind 13 to 15 mph, with gusts as high as 29 mph.
Saturday
Rain and snow likely, mainly after noon. Partly sunny, with a high near 41. West wind 13 to 15 mph becoming north in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday Night
Rain and snow, becoming all snow after 9pm. The snow could be heavy at times. Cloudy, with a low around 24. Blustery, with a north northeast wind 15 to 20 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 44 mph.
Sunday
Snow. Cloudy, with a high near 27. Blustery.
Sunday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 24.
Columbus Day
A slight chance of snow. Partly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marysville MT
 46.75°N 112.32°W (Elev. 6463 ft)
Last Update:
10:41 am MDT Oct 7, 2026
Forecast Valid:
11am MDT Oct 7, 2026-6pm MDT Oct 13, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation