Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

80°F

27°C

Humidity 22%
Wind Speed NNE 9 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Heat Index79°F (26°C)
Last update 01 Jul 05:52 PM PDT
Extended Forecast for

8 Miles NNW Cave Junction OR

  • Tonight

    Tonight: Mostly clear, with a low around 48. North northeast wind 7 to 10 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 78. East northeast wind 5 to 8 mph.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. Northeast wind 3 to 7 mph.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Calm wind becoming north northeast around 5 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 54. North wind around 5 mph becoming calm  in the evening.

    Low: 54 °F

    Clear

  • Independence Day

    Independence Day: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 48. North northeast wind 7 to 10 mph.
Thursday
Mostly sunny, with a high near 78. East northeast wind 5 to 8 mph.
Thursday Night
Mostly clear, with a low around 51. Northeast wind 3 to 7 mph.
Friday
Sunny, with a high near 85. Calm wind becoming north northeast around 5 mph.
Friday Night
Clear, with a low around 54. North wind around 5 mph becoming calm in the evening.
Independence Day
Sunny, with a high near 87.
Saturday Night
Clear, with a low around 55.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NNW Cave Junction OR
 42.27°N 123.67°W (Elev. 2041 ft)
4:40 pm PDT Jul 1, 2026
6pm PDT Jul 1, 2026-6pm PDT Jul 8, 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