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 NW 0 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 10 Dec 02:52 AM PST
Extended Forecast for

4 Miles N Happy Camp CA

  • Overnight

    Overnight: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 55. Calm wind.

    High: 55 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. East wind 3 to 5 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 55. East northeast wind around 5 mph becoming calm  in the morning.

    High: 55 °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 43.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 43. Calm wind.
Wednesday
Mostly sunny, with a high near 55. Calm wind.
Wednesday Night
Mostly clear, with a low around 41. East wind 3 to 5 mph.
Thursday
Sunny, with a high near 55. East northeast wind around 5 mph becoming calm in the morning.
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 43.
Saturday
Sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
A slight chance of rain. Partly sunny, with a high near 51.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 42.
Monday
Rain. Mostly cloudy, with a high near 48.
Monday Night
Rain. Mostly cloudy, with a low around 42.
Tuesday
Rain likely. Snow level 6600 feet. Mostly cloudy, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Happy Camp CA
 41.86°N 123.34°W (Elev. 3599 ft)
3:41 am PST Dec 10, 2025
3am 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