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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

59°F

15°C

Humidity 69%
Wind Speed N 6 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 17 Oct 11:52 PM PDT
Extended Forecast for

2 Miles E Illinois Valley OR

  • Overnight

    Overnight: Partly cloudy, with a low around 38. Light north wind.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 74. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 34. Calm wind.

    Low: 34 °F

    Increasing
    Clouds

  • Monday

    Monday: A 20 percent chance of rain before 8am. Snow level 4400 feet rising to 6500 feet in the afternoon. Mostly cloudy, with a high near 65. Calm wind.

    High: 65 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 38. Light north wind.
Sunday
Sunny, with a high near 74. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunday Night
Increasing clouds, with a low around 34. Calm wind.
Monday
A 20 percent chance of rain before 8am. Snow level 4400 feet rising to 6500 feet in the afternoon. Mostly cloudy, with a high near 65. Calm wind.
Monday Night
Mostly cloudy, with a low around 33. Calm wind.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Sunny, with a high near 68.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 32.
Friday
Sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 28.
Saturday
A chance of rain. Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Illinois Valley OR
 42.1°N 123.65°W (Elev. 1522 ft)
Last Update:
11:29 pm PDT Oct 17, 2026
Forecast Valid:
12am PDT Oct 18, 2026-6pm PDT Oct 24, 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