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

49°F

9°C

Humidity 96%
Wind Speed NNW 0 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 09 Dec 10:52 PM PST
Extended Forecast for

12 Miles W Happy Camp CA

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 53. Calm wind becoming west southwest around 5 mph.

    High: 53 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. Light northwest wind.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 52. Light east wind.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. East northeast wind around 6 mph.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54.

    High: 54 °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 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 10pm.  Snow level 7000 feet. Partly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 44. Calm wind.
Wednesday
Sunny, with a high near 53. Calm wind becoming west southwest around 5 mph.
Wednesday Night
Mostly clear, with a low around 41. Light northwest wind.
Thursday
Sunny, with a high near 52. Light east wind.
Thursday Night
Mostly clear, with a low around 42. East northeast wind around 6 mph.
Friday
Sunny, with a high near 54.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 52.
Saturday Night
A slight chance of rain after 10pm. Snow level 7000 feet. Partly cloudy, with a low around 40.
Sunday
A chance of rain, mainly after 10am. Snow level 6900 feet. Partly sunny, with a high near 46.
Sunday Night
A chance of rain. Snow level 7200 feet. Mostly cloudy, with a low around 41.
Monday
Rain. Snow level 7600 feet rising to 8200 feet in the afternoon. Mostly cloudy, with a high near 45.
Monday Night
Rain. Snow level 7900 feet lowering to 7200 feet after midnight . Mostly cloudy, with a low around 42.
Tuesday
Rain likely. Snow level 6500 feet. Mostly cloudy, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Happy Camp CA
 41.79°N 123.59°W (Elev. 5000 ft)
10:36 pm PST Dec 9, 2025
11pm 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