Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

58°F

14°C

Humidity 73%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 20 Aug 03:52 AM PDT
Extended Forecast for

17 Miles WNW Illinois Valley OR

  • Today

    Today: Sunny, with a high near 73. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 57. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 57 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 65. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 65 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 50. West southwest wind 5 to 9 mph becoming light west  in the evening.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 61. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 61 °F

    Sunny

  • Saturday Night

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

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 73. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Tonight
Increasing clouds, with a low around 57. West southwest wind around 6 mph becoming calm in the evening.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 65. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 50. West southwest wind 5 to 9 mph becoming light west in the evening.
Saturday
Sunny, with a high near 61. Light west wind increasing to 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 59.
Monday
Mostly sunny, with a high near 72.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.2°N 123.98°W (Elev. 3786 ft)
1:41 am PDT Aug 20, 2026
4am PDT Aug 20, 2026-6pm PDT Aug 26, 2026
 
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Additional Resources

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