Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

81°F

27°C

Humidity 23%
Wind Speed N 10 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Heat Index79°F (26°C)
Last update 03 Aug 09:52 PM PDT
Extended Forecast for

11 Miles ESE Illinois Valley OR

Heat Advisory August 4, 11:00am until August 6, 11:00pm
Red Flag Warning August 3, 10:48pm until August 4, 09:00pm
Red Flag Warning August 5, 02:00pm until August 5, 09:00pm
Click here for hazard details and duration
Heat Advisory
Red Flag Warning
Red Flag Warning
  •  
    Red Flag Warning August 3, 10:48pm until August 4, 09:00pm

    NOW until 9:00pm Tue

    Red Flag Warning

  • Tonight

    Low: 65 °F

    Clear then
    Patchy Smoke

  • Tuesday

    Tuesday: Patchy smoke before 2pm. Sunny, with a high near 82. Southeast wind 5 to 9 mph becoming calm.

    High: 82 °F

    Patchy Smoke

  • Tuesday Night

    Tuesday Night: Patchy smoke after 10pm. Mostly clear, with a low around 69. Northwest wind 6 to 9 mph becoming east southeast after midnight.

    Low: 69 °F

    Patchy Smoke

  • Wednesday

    Wednesday: Sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 68. West wind 5 to 10 mph becoming east after midnight.

    Low: 68 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 67.

    Low: 67 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Tonight
Patchy smoke after 1am. Clear, with a steady temperature around 65. East northeast wind around 9 mph becoming southeast after midnight.
Tuesday
Patchy smoke before 2pm. Sunny, with a high near 82. Southeast wind 5 to 9 mph becoming calm.
Tuesday Night
Patchy smoke after 10pm. Mostly clear, with a low around 69. Northwest wind 6 to 9 mph becoming east southeast after midnight.
Wednesday
Sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon.
Wednesday Night
Clear, with a low around 68. West wind 5 to 10 mph becoming east after midnight.
Thursday
Sunny, with a high near 80.
Thursday Night
Clear, with a low around 67.
Friday
Sunny, with a high near 79.
Friday Night
Clear, with a low around 64.
Saturday
Sunny, with a high near 75.
Saturday Night
Clear, with a low around 60.
Sunday
Sunny, with a high near 70.
Sunday Night
Clear, with a low around 56.
Monday
Sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles ESE Illinois Valley OR
 42.03°N 123.48°W (Elev. 5197 ft)
10:40 pm PDT Aug 3, 2026
10pm PDT Aug 3, 2026-6pm PDT 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