Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10375°NLon: 123.68508°WElev: 1389.0ft.

NA

55°F

13°C

Humidity 92%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Last update 09 Dec 08:52 PM PST
Extended Forecast for

Illinois Valley OR

  • Tonight

    Tonight: A 20 percent chance of rain before 10pm.  Patchy dense fog after 10pm.  Otherwise, mostly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Patchy
    Dense Fog

  • Wednesday

    Wednesday: Patchy dense fog before noon.  Otherwise, sunny, with a high near 64. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 64 °F

    Patchy Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog.  Otherwise, mostly clear, with a low around 38. Calm wind.

    Low: 38 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 11am.  Otherwise, sunny, with a high near 61. Calm wind.

    High: 61 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 10pm.  Patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 39.

    Low: 39 °F

    Slight Chance
    Rain and
    Patchy Fog

Detailed Forecast

Tonight
A 20 percent chance of rain before 10pm. Patchy dense fog after 10pm. Otherwise, mostly cloudy, with a low around 43. Light and variable wind.
Wednesday
Patchy dense fog before noon. Otherwise, sunny, with a high near 64. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 38. Calm wind.
Thursday
Areas of fog before 11am. Otherwise, sunny, with a high near 61. Calm wind.
Thursday Night
Mostly clear, with a low around 39. Calm wind.
Friday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 63.
Saturday Night
A slight chance of rain after 10pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 39.
Sunday
A chance of rain. Patchy fog before noon. Otherwise, partly sunny, with a high near 57.
Sunday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 40.
Monday
Rain. Mostly cloudy, with a high near 55.
Monday Night
Rain. Mostly cloudy, with a low around 41.
Tuesday
Rain likely. Mostly cloudy, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.09°N 123.68°W (Elev. 1394 ft)
9:41 pm PST Dec 9, 2025
9pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

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