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

43°F

6°C

Humidity 94%
Wind Speed W 0 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 18 Oct 02:52 AM PDT
Extended Forecast for

8 Miles E Illinois Valley OR

  • Overnight

    Overnight: Mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 71. Calm wind becoming west around 5 mph in the afternoon.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 43. Calm wind.

    Low: 43 °F

    Increasing
    Clouds

  • Monday

    Monday: A 20 percent chance of rain before 8am. Snow level 5100 feet rising to 6400 feet in the afternoon. Mostly cloudy, with a high near 62. Calm wind.

    High: 62 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 46. Calm wind.
Sunday
Sunny, with a high near 71. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Increasing clouds, with a low around 43. Calm wind.
Monday
A 20 percent chance of rain before 8am. Snow level 5100 feet rising to 6400 feet in the afternoon. Mostly cloudy, with a high near 62. Calm wind.
Monday Night
Mostly cloudy, with a low around 42. Calm wind.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Sunny, with a high near 64.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 39.
Friday
Sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 38.
Saturday
A slight chance of rain. Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles E Illinois Valley OR
 42.07°N 123.52°W (Elev. 2136 ft)
Last Update:
11:29 pm PDT Oct 17, 2026
Forecast Valid:
3am PDT Oct 18, 2026-6pm PDT Oct 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation