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

43°F

6°C

Humidity 98%
Wind Speed SW 2 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 10 Dec 03:52 AM PST
Extended Forecast for

17 Miles SSE Agness OR

  • Overnight

    Overnight: A 20 percent chance of rain.  Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly between 10am and 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 54. Southwest wind 3 to 5 mph.

    High: 54 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. Light east wind.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 57. North wind 3 to 5 mph.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. East wind around 6 mph.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 10pm.  Mostly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
A 20 percent chance of rain. Mostly cloudy, with a low around 49. Calm wind.
Wednesday
A 30 percent chance of rain, mainly between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 54. Southwest wind 3 to 5 mph.
Wednesday Night
Partly cloudy, with a low around 44. Light east wind.
Thursday
Sunny, with a high near 57. North wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 44. East wind around 6 mph.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 59.
Saturday Night
A slight chance of rain after 10pm. Mostly cloudy, with a low around 44.
Sunday
A chance of rain. Partly sunny, with a high near 52.
Sunday Night
Rain likely. Mostly cloudy, with a low around 47.
Monday
Rain. Mostly cloudy, with a high near 51.
Monday Night
Rain. Mostly cloudy, with a low around 47.
Tuesday
Rain. Mostly cloudy, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
3:41 am PST Dec 10, 2025
4am PST Dec 10, 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