Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

58°F

14°C

Humidity 71%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 08 Dec 04:52 PM PST
Extended Forecast for

12 Miles W Happy Camp CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. West southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 10 percent chance of rain after 4pm.  Partly sunny, with a high near 47. West wind around 8 mph.

    High: 47 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before 10pm.  Mostly cloudy, with a low around 43. West southwest wind 7 to 9 mph.

    Low: 43 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 52. Northeast wind around 6 mph becoming light and variable  in the afternoon.

    High: 52 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. West southwest wind around 7 mph becoming north after midnight.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41.

    Low: 41 °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 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 40. West southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Tuesday
A 10 percent chance of rain after 4pm. Partly sunny, with a high near 47. West wind around 8 mph.
Tuesday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 43. West southwest wind 7 to 9 mph.
Wednesday
Mostly sunny, with a high near 52. Northeast wind around 6 mph becoming light and variable in the afternoon.
Wednesday Night
Mostly clear, with a low around 41. West southwest wind around 7 mph becoming north after midnight.
Thursday
Sunny, with a high near 51.
Thursday Night
Mostly clear, with a low around 41.
Friday
Sunny, with a high near 53.
Friday Night
Mostly clear, with a low around 41.
Saturday
A slight chance of rain after 4pm. Snow level 7200 feet. Sunny, with a high near 51.
Saturday Night
A chance of rain. Snow level 6900 feet. Mostly cloudy, with a low around 39.
Sunday
A chance of rain. Snow level 6600 feet. Partly sunny, with a high near 44.
Sunday Night
A chance of rain. Snow level 6800 feet. Mostly cloudy, with a low around 42.
Monday
Rain likely. Snow level 7300 feet. Mostly cloudy, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Happy Camp CA
 41.79°N 123.59°W (Elev. 5000 ft)
3:41 pm PST Dec 8, 2025
5pm PST Dec 8, 2025-6pm PST Dec 15, 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