Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

86°F

30°C

Humidity 22%
Wind Speed ENE 4 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Heat Index83°F (28°C)
Last update 30 Aug 02:52 PM PDT
Extended Forecast for

3 Miles SW Illinois Valley OR

  • Tonight

    Tonight: Clear, with a low around 47. North wind around 6 mph becoming calm  after midnight.

    Low: 47 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 86. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. West southwest wind 5 to 10 mph becoming light  after midnight. Winds could gust as high as 20 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain after 11am.  Partly sunny, with a high near 72. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 72 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 44. South wind 6 to 9 mph.

    Low: 44 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain, mainly after 11am.  High near 68. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 68 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Low around 45. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 45 °F

    Rain

  • Thursday

    Thursday: Rain.  Mostly cloudy, with a high near 67.

    High: 67 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before 11pm.  Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain Likely

Detailed Forecast

Tonight
Clear, with a low around 47. North wind around 6 mph becoming calm after midnight.
Monday
Sunny, with a high near 86. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 44. West southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Tuesday
A 30 percent chance of rain after 11am. Partly sunny, with a high near 72. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44. South wind 6 to 9 mph.
Wednesday
Rain, mainly after 11am. High near 68. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain. Low around 45. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday
Rain. Mostly cloudy, with a high near 67.
Thursday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 42.
Friday
A chance of rain. Partly sunny, with a high near 70.
Friday Night
A chance of rain. Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 40.
Sunday
A slight chance of rain. Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Illinois Valley OR
 42.07°N 123.7°W (Elev. 1512 ft)
1:02 pm PDT Aug 30, 2026
3pm PDT Aug 30, 2026-6pm PDT Sep 6, 2026
 
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Additional Resources

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