Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

73°F

23°C

Humidity 54%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Last update 26 Aug 07:52 PM PDT
Extended Forecast for

15 Miles ESE Illinois Valley OR

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 51. South southwest wind 3 to 7 mph.

    Low: 51 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Sunny, with a high near 68. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50. Northwest wind around 7 mph becoming northeast after midnight.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67. East northeast wind 5 to 7 mph becoming west northwest in the afternoon.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 48. North wind 7 to 9 mph.

    Low: 48 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 51.

    Low: 51 °F

    Clear

Detailed Forecast

Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 51. South southwest wind 3 to 7 mph.
Thursday
Sunny, with a high near 68. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 50. Northwest wind around 7 mph becoming northeast after midnight.
Friday
Sunny, with a high near 67. East northeast wind 5 to 7 mph becoming west northwest in the afternoon.
Friday Night
Clear, with a low around 48. North wind 7 to 9 mph.
Saturday
Sunny, with a high near 63.
Saturday Night
Clear, with a low around 46.
Sunday
Sunny, with a high near 69.
Sunday Night
Clear, with a low around 51.
Monday
Sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 64.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles ESE Illinois Valley OR
 42°N 123.41°W (Elev. 5600 ft)
4:40 pm PDT Aug 26, 2026
8pm PDT Aug 26, 2026-6pm PDT Sep 2, 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