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

Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Current conditions at

Sieben I-15 MP 216 (MTSBN)

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

NA

82°F

28°C

Humidity 19%
Wind Speed WNW 17 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Heat Index80°F (27°C)
Last update 30 Aug 06:15 PM MDT
Extended Forecast for

Marysville MT

  • Tonight

    Tonight: Widespread haze after 3am. Mostly clear, with a low around 53. West southwest wind 7 to 11 mph.

    Low: 53 °F

    Mostly Clear
    then Haze

  • Sunday

    Sunday: Widespread haze. Sunny, with a high near 73. Southwest wind 6 to 8 mph becoming north northeast in the afternoon.

    High: 73 °F

    Haze

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. Northeast wind around 7 mph becoming west southwest after midnight.

    Low: 55 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 75. West southwest wind 5 to 7 mph becoming east in the afternoon.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. East northeast wind around 8 mph becoming west northwest after midnight.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. West wind 6 to 9 mph becoming east northeast in the afternoon.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53. North wind 8 to 10 mph.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 70. Northeast wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Widespread haze after 3am. Mostly clear, with a low around 53. West southwest wind 7 to 11 mph.
Sunday
Widespread haze. Sunny, with a high near 73. Southwest wind 6 to 8 mph becoming north northeast in the afternoon.
Sunday Night
Mostly clear, with a low around 55. Northeast wind around 7 mph becoming west southwest after midnight.
Labor Day
Sunny, with a high near 75. West southwest wind 5 to 7 mph becoming east in the afternoon.
Monday Night
Mostly clear, with a low around 57. East northeast wind around 8 mph becoming west northwest after midnight.
Tuesday
Sunny, with a high near 74. West wind 6 to 9 mph becoming east northeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 53. North wind 8 to 10 mph.
Wednesday
Sunny, with a high near 70. Northeast wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 55.
Saturday
A slight chance of showers. Mostly sunny, with a high near 72.
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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:
4:13 pm MDT Aug 30, 2025
Forecast Valid:
6pm MDT Aug 30, 2025-6pm MDT Sep 6, 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