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

57°F

14°C

Humidity 85%
Wind Speed SW 2 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 09 Dec 05:52 PM PST
Extended Forecast for

14 Miles W Illinois Valley OR

  • Tonight

    Tonight: A 50 percent chance of rain, mainly before 11pm.  Mostly cloudy, with a low around 47. South wind 5 to 8 mph.

    Low: 47 °F

    Chance Rain
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A slight chance of rain before 11am, then a slight chance of rain after 4pm.  Mostly sunny, with a high near 51. West southwest wind 3 to 6 mph.  Chance of precipitation is 20%.

    High: 51 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 10pm.  Snow level 7000 feet. Mostly clear, with a low around 43. South wind around 6 mph becoming east northeast after midnight.

    Low: 43 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 52. East northeast wind 5 to 8 mph becoming calm  in the afternoon.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. East northeast wind 10 to 13 mph.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 10pm.  Snow level 6900 feet. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
A 50 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 47. South wind 5 to 8 mph.
Wednesday
A slight chance of rain before 11am, then a slight chance of rain after 4pm. Mostly sunny, with a high near 51. West southwest wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday Night
A 20 percent chance of rain before 10pm. Snow level 7000 feet. Mostly clear, with a low around 43. South wind around 6 mph becoming east northeast after midnight.
Thursday
Sunny, with a high near 52. East northeast wind 5 to 8 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 44. East northeast wind 10 to 13 mph.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 53.
Saturday Night
A slight chance of rain after 10pm. Snow level 6900 feet. Mostly cloudy, with a low around 42.
Sunday
A chance of rain. Snow level 6900 feet. Partly sunny, with a high near 47.
Sunday Night
Rain likely. Mostly cloudy, with a low around 43.
Monday
Rain. Mostly cloudy, with a high near 47.
Monday Night
Rain. Snow level 7700 feet lowering to 7000 feet after midnight . Mostly cloudy, with a low around 43.
Tuesday
Rain likely. Snow level 6200 feet. Mostly cloudy, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles W Illinois Valley OR
 42.14°N 123.93°W (Elev. 4121 ft)
3:41 pm PST Dec 9, 2025
6pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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