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

11 Miles SE Agness OR

  • Tonight

    Tonight: A 30 percent chance of rain, mainly before midnight.  Mostly cloudy, with a steady temperature around 50. Southwest wind 8 to 13 mph becoming light south  after midnight. Winds could gust as high as 20 mph.

    Low: 50 °F

    Chance Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain before 11am.  Partly sunny, with a high near 53. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 53 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain.  Partly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: Sunny, with a high near 52. East wind 3 to 6 mph.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. East wind 7 to 9 mph.

    Low: 42 °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 41.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of rain after 10pm.  Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain

Detailed Forecast

Tonight
A 30 percent chance of rain, mainly before midnight. Mostly cloudy, with a steady temperature around 50. Southwest wind 8 to 13 mph becoming light south after midnight. Winds could gust as high as 20 mph.
Wednesday
A 20 percent chance of rain before 11am. Partly sunny, with a high near 53. Calm wind becoming west northwest around 5 mph in the afternoon.
Wednesday Night
A 20 percent chance of rain. Partly cloudy, with a low around 43. Light and variable wind.
Thursday
Sunny, with a high near 52. East wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 42. East wind 7 to 9 mph.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 55.
Saturday Night
A chance of rain after 10pm. Mostly cloudy, with a low around 43.
Sunday
A chance of rain. Partly sunny, with a high near 49.
Sunday Night
Rain likely. Mostly cloudy, with a low around 45.
Monday
Rain. Mostly cloudy, with a high near 48.
Monday Night
Rain. Mostly cloudy, with a low around 44.
Tuesday
Rain likely. Snow level 6000 feet. Mostly cloudy, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SE Agness OR
 42.44°N 123.9°W (Elev. 3671 ft)
3:41 pm PST Dec 9, 2025
9pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database