National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

91°F

33°C

Humidity 26%
Wind Speed N 9 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Heat Index88°F (31°C)
Last update 04 Jul 06:52 PM PDT
Extended Forecast for

5 Miles NNW Cave Junction OR

  • Tonight

    Tonight: Mostly clear, with a low around 57. North northeast wind 8 to 10 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 84. Northeast wind 6 to 9 mph.

    High: 84 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 56. North northeast wind around 7 mph.

    Low: 56 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Northeast wind around 6 mph becoming light and variable.

    High: 86 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 59. West wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 59 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 50.

    Low: 50 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 52.

    Low: 52 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 57. North northeast wind 8 to 10 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 84. Northeast wind 6 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 56. North northeast wind around 7 mph.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Northeast wind around 6 mph becoming light and variable.
Monday Night
Clear, with a low around 59. West wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Clear, with a low around 50.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Clear, with a low around 52.
Thursday
Sunny, with a high near 83.
Thursday Night
Clear, with a low around 52.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Cave Junction OR
 42.25°N 123.67°W (Elev. 3409 ft)
Last Update:
4:40 pm PDT Jul 4, 2026
Forecast Valid:
7pm PDT Jul 4, 2026-6pm PDT Jul 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation