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

Hot Temperatures in the Northwest U.S.; Excessive Rainfall Potential in the Southwest U.S.

Hot to extremely hot daytime temperatures remain in place across coastal southern California and the interior Northwest, with the Northwest carrying the potential for record-breaking high temperatures. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. this week. Read More >

Hazardous Weather Conditions

Current conditions at

LIBBY (LBBM8)

Lat: 48.40361°NLon: 115.53917°WElev: 2070.0ft.

NA

84°F

29°C

Humidity 28%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Heat Index82°F (28°C)
Last update 02 Sep 08:25 PM MDT
Extended Forecast for

12 Miles SSW Libby MT

Heat Advisory until September 4, 12:00am
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until September 4, 12:00am

    NOW until 12:00am Thu

    Heat Advisory

  • Tonight

    Low: 55 °F

    Areas Smoke

  • Wednesday

    Wednesday: Areas of smoke. Sunny, with a high near 78. East wind 6 to 10 mph becoming west northwest in the afternoon.

    High: 78 °F

    Areas Smoke

  • Wednesday Night

    Wednesday Night: Areas of smoke before 1am. Mostly clear, with a low around 53. West wind 8 to 10 mph.

    Low: 53 °F

    Areas Smoke

  • Thursday

    Thursday: Sunny, with a high near 69. East wind 9 to 16 mph, with gusts as high as 20 mph.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47. East northeast wind 15 to 18 mph, with gusts as high as 24 mph.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

Tonight
Areas of smoke before midnight, then areas of smoke after 2am. Mostly clear, with a low around 55. East wind 6 to 9 mph.
Wednesday
Areas of smoke. Sunny, with a high near 78. East wind 6 to 10 mph becoming west northwest in the afternoon.
Wednesday Night
Areas of smoke before 1am. Mostly clear, with a low around 53. West wind 8 to 10 mph.
Thursday
Sunny, with a high near 69. East wind 9 to 16 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 47. East northeast wind 15 to 18 mph, with gusts as high as 24 mph.
Friday
Sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 72.
Saturday Night
A chance of rain, mainly after midnight. Partly cloudy, with a low around 51.
Sunday
A slight chance of rain, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 62.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 48.
Monday
A chance of rain. Partly sunny, with a high near 62.
Monday Night
A chance of rain. Mostly cloudy, with a low around 48.
Tuesday
A chance of rain. Mostly cloudy, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SSW Libby MT
 48.23°N 115.67°W (Elev. 5750 ft)
Last Update:
2:31 pm MDT Sep 2, 2025
Forecast Valid:
9pm MDT Sep 2, 2025-6pm MDT Sep 9, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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