October Heat Wave in California; Tropical Cyclone Possible in the Gulf

Much higher than typical October temperatures will continue across coastal southern California up through the Bay Area and Central Valley through midweek resulting in result in Major to Extreme HeatRisk. A tropical depression is likely to form over the Gulf of America during the middle part of this week with further strengthening possible as it moves northeastward later this week. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

44°F

7°C

Humidity 93%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 06 Oct 06:52 AM PDT
Extended Forecast for

17 Miles WNW Illinois Valley OR

  • Today

    Today: Sunny, with a high near 77. East southeast wind around 6 mph becoming calm.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 67. Light and variable wind becoming east southeast around 6 mph.

    Low: 67 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. East southeast wind around 5 mph becoming calm.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 65. West wind 5 to 13 mph becoming northeast after midnight. Winds could gust as high as 20 mph.

    Low: 65 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Northeast wind 9 to 14 mph becoming light and variable  in the afternoon. Winds could gust as high as 21 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 77. East southeast wind around 6 mph becoming calm.
Tonight
Clear, with a low around 67. Light and variable wind becoming east southeast around 6 mph.
Wednesday
Sunny, with a high near 78. East southeast wind around 5 mph becoming calm.
Wednesday Night
Clear, with a low around 65. West wind 5 to 13 mph becoming northeast after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 77. Northeast wind 9 to 14 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph.
Thursday Night
Clear, with a low around 60.
Friday
Sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 54.
Saturday Night
Clear, with a low around 43.
Sunday
Sunny, with a high near 54.
Sunday Night
Clear, with a low around 44.
Columbus Day
Sunny, with a high near 59.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.18°N 123.98°W (Elev. 4344 ft)
4:41 am PDT Oct 6, 2026
7am PDT Oct 6, 2026-6pm PDT Oct 12, 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