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

Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

76°F

24°C

Humidity 33%
Wind Speed N 9 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Heat Index77°F (25°C)
Last update 29 Jun 01:52 PM PDT
Extended Forecast for

3 Miles SSW Illinois Valley OR

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. North northeast wind around 9 mph, with gusts as high as 20 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 48. North northeast wind 5 to 11 mph, with gusts as high as 24 mph.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 79. North northeast wind 5 to 9 mph, with gusts as high as 18 mph.

    High: 79 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 46. North northeast wind 6 to 10 mph, with gusts as high as 24 mph.

    Low: 46 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 77. North northeast wind 5 to 10 mph, with gusts as high as 21 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 77. North northeast wind around 9 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 48. North northeast wind 5 to 11 mph, with gusts as high as 24 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 79. North northeast wind 5 to 9 mph, with gusts as high as 18 mph.
Tuesday Night
Increasing clouds, with a low around 46. North northeast wind 6 to 10 mph, with gusts as high as 24 mph.
Wednesday
Sunny, with a high near 77. North northeast wind 5 to 10 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 86.
Friday Night
Clear, with a low around 50.
Independence Day
Sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Illinois Valley OR
 42.07°N 123.7°W (Elev. 1512 ft)
Last Update:
1:51 pm PDT Jun 29, 2026
Forecast Valid:
2pm PDT Jun 29, 2026-6pm PDT Jul 5, 2026
 
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