Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

61°F

16°C

Humidity 37%
Wind Speed ESE 3 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 04 Aug 10:30 AM MDT
Extended Forecast for

12 Miles SSE Helmville MT

  • Today

    Today: Patchy smoke. Sunny, with a high near 66. Light and variable wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 66 °F

    Patchy Smoke

  • Tonight

    Tonight: Mostly clear, with a low around 45. Northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71. West southwest wind 3 to 8 mph.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. West northwest wind 5 to 8 mph becoming light and variable  in the evening.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

Today
Patchy smoke. Sunny, with a high near 66. Light and variable wind becoming west northwest 5 to 7 mph in the afternoon.
Tonight
Mostly clear, with a low around 45. Northwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 71. West southwest wind 3 to 8 mph.
Wednesday Night
Mostly clear, with a low around 49. West northwest wind 5 to 8 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 77. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SSE Helmville MT
 46.7°N 112.87°W (Elev. 6558 ft)
2:01 am MDT Aug 4, 2026
10am MDT Aug 4, 2026-6pm MDT Aug 10, 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