Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

88°F

31°C

Humidity 21%
Wind Speed WSW 7 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Heat Index85°F (29°C)
Last update 21 Aug 03:52 PM PDT
Extended Forecast for

Illinois Valley OR

  • Tonight

    Tonight: Mostly clear, with a low around 47. West southwest wind 5 to 9 mph becoming light south  after midnight.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46. West wind 5 to 9 mph becoming calm  in the evening.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 91. Light north northeast wind.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. North wind around 5 mph becoming calm  after midnight.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Tuesday Night

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

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 47. West southwest wind 5 to 9 mph becoming light south after midnight.
Saturday
Sunny, with a high near 83. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 46. West wind 5 to 9 mph becoming calm in the evening.
Sunday
Sunny, with a high near 91. Light north northeast wind.
Sunday Night
Mostly clear, with a low around 54. North wind around 5 mph becoming calm after midnight.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.09°N 123.68°W (Elev. 1394 ft)
2:56 pm PDT Aug 21, 2026
4pm PDT Aug 21, 2026-6pm PDT Aug 28, 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