Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

unknown precip

61°F

16°C

Humidity 74%
Wind Speed ESE 4 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Last update 20 Jun 02:00 PM MDT
Extended Forecast for

8 Miles SW Marysville MT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 67. West wind around 11 mph, with gusts as high as 21 mph.

    High: 67 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 44. West wind 6 to 13 mph, with gusts as high as 24 mph.

    Low: 44 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 63. West wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. West northwest wind 7 to 11 mph becoming north northeast after midnight. Winds could gust as high as 22 mph.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 56. North wind around 8 mph.

    High: 56 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 67. West wind around 11 mph, with gusts as high as 21 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 44. West wind 6 to 13 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 63. West wind 6 to 13 mph, with gusts as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 41. West northwest wind 7 to 11 mph becoming north northeast after midnight. Winds could gust as high as 22 mph.
Monday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 56. North wind around 8 mph.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SW Marysville MT
 46.7°N 112.44°W (Elev. 6493 ft)
2:01 pm MDT Jun 20, 2026
2pm MDT Jun 20, 2026-6pm MDT Jun 26, 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