Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

48°F

9°C

Humidity 95%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 09 Dec 08:52 AM PST
Extended Forecast for

9 Miles WNW Illinois Valley OR

  • Today

    Today: A 40 percent chance of rain.  Mostly cloudy, with a high near 49. Southwest wind 8 to 10 mph.

    High: 49 °F

    Chance Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 46. Southwest wind around 7 mph.

    Low: 46 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of rain.  Patchy fog after 4pm.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 54. West southwest wind around 6 mph.

    High: 54 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Patchy fog before 9pm.  Otherwise, mostly clear, with a low around 41. Light and variable wind becoming east around 6 mph in the evening.

    Low: 41 °F

    Patchy Fog
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 53. East northeast wind 3 to 8 mph.

    High: 53 °F

    Sunny

  • Thursday Night

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

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of rain after 4pm.  Sunny, with a high near 54.

    High: 54 °F

    Sunny then
    Slight Chance
    Rain

Detailed Forecast

Today
A 40 percent chance of rain. Mostly cloudy, with a high near 49. Southwest wind 8 to 10 mph.
Tonight
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 46. Southwest wind around 7 mph.
Wednesday
A 20 percent chance of rain. Patchy fog after 4pm. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 54. West southwest wind around 6 mph.
Wednesday Night
Patchy fog before 9pm. Otherwise, mostly clear, with a low around 41. Light and variable wind becoming east around 6 mph in the evening.
Thursday
Sunny, with a high near 53. East northeast wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 42.
Friday
Mostly sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 41.
Saturday
A slight chance of rain after 4pm. Sunny, with a high near 54.
Saturday Night
A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 42.
Sunday
A chance of rain. Mostly cloudy, with a high near 46.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 43.
Monday
Rain likely. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WNW Illinois Valley OR
 42.15°N 123.85°W (Elev. 3356 ft)
3:41 am PST Dec 9, 2025
9am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database