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

54°F

12°C

Humidity 93%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 09 Dec 09:52 PM PST
Extended Forecast for

11 Miles SSE Agness OR

  • Tonight

    Tonight: A chance of rain before 1am, then a chance of rain after 4am.  Mostly cloudy, with a low around 50. South wind 3 to 6 mph.  Chance of precipitation is 30%.

    Low: 50 °F

    Chance Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly between 9am and 11am.  Partly sunny, with a high near 57. Light and variable wind.

    High: 57 °F

    Chance Rain
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain.  Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: Sunny, with a high near 57. East wind around 5 mph becoming calm  in the afternoon.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45. East wind around 6 mph.

    Low: 45 °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 43.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

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

    Low: 44 °F

    Chance Rain

Detailed Forecast

Tonight
A chance of rain before 1am, then a chance of rain after 4am. Mostly cloudy, with a low around 50. South wind 3 to 6 mph. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of rain, mainly between 9am and 11am. Partly sunny, with a high near 57. Light and variable wind.
Wednesday Night
A 20 percent chance of rain. Partly cloudy, with a low around 44. Calm wind.
Thursday
Sunny, with a high near 57. East wind around 5 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 45. East wind around 6 mph.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 60.
Saturday Night
A chance of rain after 10pm. Mostly cloudy, with a low around 44.
Sunday
A chance of rain. Partly sunny, with a high near 53.
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 likely. Snow level 6000 feet. Mostly cloudy, with a high near 51.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSE Agness OR
 42.43°N 123.96°W (Elev. 3182 ft)
9:41 pm PST Dec 9, 2025
10pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database