Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10386°NLon: 123.68519°WElev: 1389.0ft.

NA

90°F

32°C

Humidity 24%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Heat Index87°F (31°C)
Last update 01 Aug 05:52 PM PDT
Extended Forecast for

17 Miles WNW Illinois Valley OR

  • Tonight

    Tonight: Clear, with a low around 53. East northeast wind 13 to 20 mph, with gusts as high as 23 mph.

    Low: 53 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 70. North northeast wind 14 to 20 mph, with gusts as high as 26 mph.

    High: 70 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56. Breezy, with a north northeast wind 16 to 26 mph, with gusts as high as 31 mph.

    Low: 56 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 79. Breezy, with a northeast wind 20 to 25 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 79 °F

    Sunny and
    Breezy then
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 64. East northeast wind 11 to 18 mph, with gusts as high as 22 mph.

    Low: 64 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 53. East northeast wind 13 to 20 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 70. North northeast wind 14 to 20 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 56. Breezy, with a north northeast wind 16 to 26 mph, with gusts as high as 31 mph.
Monday
Sunny, with a high near 79. Breezy, with a northeast wind 20 to 25 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Clear, with a low around 64. East northeast wind 11 to 18 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Clear, with a low around 66.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Clear, with a low around 64.
Thursday
Sunny, with a high near 79.
Thursday Night
Clear, with a low around 63.
Friday
Sunny, with a high near 78.
Friday Night
Clear, with a low around 63.
Saturday
Sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.2°N 123.98°W (Elev. 3786 ft)
4:40 pm PDT Aug 1, 2026
6pm PDT Aug 1, 2026-6pm PDT Aug 8, 2026
 
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Additional Resources

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