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

59°F

15°C

Humidity 68%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 20 Aug 02:52 AM PDT
Extended Forecast for

17 Miles WNW Illinois Valley OR

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 63. Light east wind.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 71. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 56. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 56 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 64. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 64 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 50. West wind 3 to 8 mph.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 63. Light east wind.
Thursday
Sunny, with a high near 71. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 56. West southwest wind around 6 mph becoming calm in the evening.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 64. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 50. West wind 3 to 8 mph.
Saturday
Sunny, with a high near 61.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 58.
Monday
Mostly sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.18°N 123.98°W (Elev. 4344 ft)
1:41 am PDT Aug 20, 2026
3am PDT Aug 20, 2026-6pm PDT Aug 26, 2026
 
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Additional Resources

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