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

57°F

14°C

Humidity 85%
Wind Speed SW 2 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 09 Dec 05:52 PM PST
Extended Forecast for

15 Miles NNE Happy Camp CA

  • Tonight

    Tonight: A 20 percent chance of rain before 8pm.  Partly cloudy, with a low around 42. Southwest wind 5 to 10 mph.

    Low: 42 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 54. Southwest wind 5 to 7 mph becoming calm  in the morning.

    High: 54 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39. South southwest wind 7 to 9 mph.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 52. Southeast wind around 6 mph becoming calm  in the afternoon.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40. South southeast wind 6 to 9 mph.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain before 8pm. Partly cloudy, with a low around 42. Southwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 54. Southwest wind 5 to 7 mph becoming calm in the morning.
Wednesday Night
Mostly clear, with a low around 39. South southwest wind 7 to 9 mph.
Thursday
Sunny, with a high near 52. Southeast wind around 6 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 40. South southeast wind 6 to 9 mph.
Friday
Sunny, with a high near 53.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
A slight chance of rain. Snow level 6900 feet. Partly sunny, with a high near 47.
Sunday Night
A chance of rain. Snow level 7200 feet. Mostly cloudy, with a low around 39.
Monday
Rain. Snow level 7500 feet rising to 8100 feet in the afternoon. Mostly cloudy, with a high near 44.
Monday Night
Rain. Snow level 7800 feet lowering to 7200 feet after midnight . Mostly cloudy, with a low around 40.
Tuesday
Rain likely. Snow level 6500 feet. Mostly cloudy, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles NNE Happy Camp CA
 42.02°N 123.27°W (Elev. 5052 ft)
3:41 pm PST Dec 9, 2025
6pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database