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

11 Miles SE Agness OR

  • Overnight

    Overnight: A 20 percent chance of rain.  Mostly cloudy, with a low around 47. Light south southeast wind.

    Low: 47 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain between noon and 1pm.  Partly sunny, with a high near 52. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 52 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 53. Light and variable wind.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43. East wind around 6 mph.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57.

    High: 57 °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 56.

    High: 56 °F

    Sunny

  • Saturday Night

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

    Low: 43 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
A 20 percent chance of rain. Mostly cloudy, with a low around 47. Light south southeast wind.
Wednesday
A 20 percent chance of rain between noon and 1pm. Partly sunny, with a high near 52. Calm wind becoming west southwest around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 43. Light and variable wind.
Thursday
Sunny, with a high near 53. Light and variable wind.
Thursday Night
Mostly clear, with a low around 43. East wind around 6 mph.
Friday
Sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 56.
Saturday Night
A slight chance of rain after 10pm. Mostly cloudy, with a low around 43.
Sunday
A chance of rain. Mostly cloudy, with a high near 50.
Sunday Night
Rain likely. Mostly cloudy, with a low around 46.
Monday
Rain. Mostly cloudy, with a high near 50.
Monday Night
Rain. Mostly cloudy, with a low around 45.
Tuesday
Rain likely. Snow level 6100 feet. Mostly cloudy, with a high near 47.
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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 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