Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Current conditions at

Sieben I-15 MP 216 (MTSBN)

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

NA

89°F

32°C

Humidity 26%
Wind Speed SE 16 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Heat Index86°F (30°C)
Last update 25 Jul 08:02 PM MDT
Extended Forecast for

Marysville MT

  • Tonight

    Tonight: Patchy smoke after 9pm. Mostly clear, with a low around 60. West southwest wind 8 to 10 mph.

    Low: 60 °F

    Patchy Smoke

  • Sunday

    Sunday: Patchy smoke. Sunny, with a high near 83. West southwest wind 3 to 8 mph.

    High: 83 °F

    Patchy Smoke

  • Sunday Night

    Sunday Night: Patchy smoke. Mostly clear, with a low around 60. West wind around 8 mph.

    Low: 60 °F

    Patchy Smoke

  • Monday

    Monday: Sunny, with a high near 81. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 59. West northwest wind around 8 mph.

    Low: 59 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. West wind 6 to 8 mph.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. West wind 5 to 8 mph, with gusts as high as 18 mph.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy smoke after 9pm. Mostly clear, with a low around 60. West southwest wind 8 to 10 mph.
Sunday
Patchy smoke. Sunny, with a high near 83. West southwest wind 3 to 8 mph.
Sunday Night
Patchy smoke. Mostly clear, with a low around 60. West wind around 8 mph.
Monday
Sunny, with a high near 81. Calm wind becoming west 5 to 7 mph in the afternoon.
Monday Night
Clear, with a low around 59. West northwest wind around 8 mph.
Tuesday
Sunny, with a high near 84. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 60. West wind 6 to 8 mph.
Wednesday
Sunny, with a high near 83. West wind 5 to 8 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Marysville MT
 46.77°N 112.33°W (Elev. 6099 ft)
3:52 pm MDT Jul 25, 2026
8pm MDT Jul 25, 2026-6pm MDT Aug 1, 2026
 
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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