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

44°F

7°C

Humidity 98%
Wind Speed SW 0 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 10 Dec 01:52 AM PST
Extended Forecast for

17 Miles WNW Illinois Valley OR

  • Overnight

    Overnight: Mostly cloudy, with a low around 47. South wind 3 to 5 mph.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of rain between 10am and 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 50. Southwest wind 3 to 5 mph.

    High: 50 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43. South wind around 5 mph becoming calm  in the evening.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 54. East wind around 6 mph becoming calm  in the morning.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. East northeast wind around 9 mph.

    Low: 44 °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 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 10pm.  Snow level 6900 feet. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 47. South wind 3 to 5 mph.
Wednesday
A 20 percent chance of rain between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 50. Southwest wind 3 to 5 mph.
Wednesday Night
Mostly clear, with a low around 43. South wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 54. East wind around 6 mph becoming calm in the morning.
Thursday Night
Mostly clear, with a low around 44. East northeast wind around 9 mph.
Friday
Sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 54.
Saturday Night
A slight chance of rain after 10pm. Snow level 6900 feet. Mostly cloudy, with a low around 43.
Sunday
A chance of rain. Snow level 7100 feet. Partly sunny, with a high near 48.
Sunday Night
Rain likely. The rain could be heavy at times. Mostly cloudy, with a low around 45.
Monday
Rain. The rain could be heavy at times. Mostly cloudy, with a high near 49.
Monday Night
Rain. Snow level 7800 feet lowering to 6900 feet after midnight . Mostly cloudy, with a low around 45.
Tuesday
Rain likely. Snow level 6100 feet. Mostly cloudy, with a high near 46.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.18°N 123.98°W (Elev. 4344 ft)
2:21 am PST Dec 10, 2025
2am PST Dec 10, 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