Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10375°NLon: 123.68508°WElev: 1389.0ft.

NA

49°F

9°C

Humidity 98%
Wind Speed E 0 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 10 Dec 04:52 PM PST
Extended Forecast for

12 Miles W Happy Camp CA

  • Tonight

    Tonight: Mostly clear, with a low around 43. West northwest wind around 7 mph.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 53. Northeast wind 5 to 8 mph becoming light and variable  in the afternoon.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45. Northeast wind 11 to 13 mph.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 55. East northeast wind 6 to 10 mph becoming north northwest in the afternoon.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. North northeast wind 11 to 13 mph.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: A 10 percent chance of rain after 4am.  Snow level 7000 feet. Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: A chance of rain, mainly after 10am.  Snow level 7000 feet. Partly sunny, with a high near 47.

    High: 47 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 4am.  Snow level 7800 feet. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 43. West northwest wind around 7 mph.
Thursday
Sunny, with a high near 53. Northeast wind 5 to 8 mph becoming light and variable in the afternoon.
Thursday Night
Mostly clear, with a low around 45. Northeast wind 11 to 13 mph.
Friday
Sunny, with a high near 55. East northeast wind 6 to 10 mph becoming north northwest in the afternoon.
Friday Night
Mostly clear, with a low around 42. North northeast wind 11 to 13 mph.
Saturday
Sunny, with a high near 52.
Saturday Night
A 10 percent chance of rain after 4am. Snow level 7000 feet. Partly cloudy, with a low around 40.
Sunday
A chance of rain, mainly after 10am. Snow level 7000 feet. Partly sunny, with a high near 47.
Sunday Night
Rain likely, mainly after 4am. Snow level 7800 feet. Mostly cloudy, with a low around 43.
Monday
Rain. Mostly cloudy, with a high near 47.
Monday Night
Rain. Snow level 8700 feet lowering to 7900 feet after midnight . Mostly cloudy, with a low around 43.
Tuesday
Rain likely. Snow level 7000 feet. Mostly cloudy, with a high near 44.
Tuesday Night
Rain likely. Snow level 6400 feet. Mostly cloudy, with a low around 40.
Wednesday
Rain likely. Snow level 6500 feet. Mostly cloudy, with a high near 43.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Happy Camp CA
 41.79°N 123.59°W (Elev. 5000 ft)
3:40 pm PST Dec 10, 2025
5pm PST Dec 10, 2025-6pm PST Dec 17, 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