National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

48°F

9°C

Humidity 96%
Wind Speed SW 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 07 Dec 06:52 PM PST
Extended Forecast for

15 Miles NNE Happy Camp CA

  • Tonight

    Tonight: A 40 percent chance of rain after 5am. Snow level 7400 feet. Mostly cloudy, with a low around 39. West southwest wind around 9 mph.

    Low: 39 °F

    Chance Rain

  • Monday

    Monday: A 20 percent chance of rain. Snow level 8100 feet. Mostly sunny, with a high near 46. Southwest wind 7 to 9 mph.

    High: 46 °F

    Slight Chance
    Rain

  • Monday Night

    Monday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 39. Southwest wind 15 to 18 mph, with gusts as high as 28 mph.

    Low: 39 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A 50 percent chance of rain. Mostly cloudy, with a high near 47. Southwest wind 13 to 18 mph, with gusts as high as 28 mph.

    High: 47 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 43. Southwest wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Chance Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain, mainly before 4pm. Partly sunny, with a high near 50.

    High: 50 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 10pm. Snow level 8100 feet. Partly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
A 40 percent chance of rain after 5am. Snow level 7400 feet. Mostly cloudy, with a low around 39. West southwest wind around 9 mph.
Monday
A 20 percent chance of rain. Snow level 8100 feet. Mostly sunny, with a high near 46. Southwest wind 7 to 9 mph.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 39. Southwest wind 15 to 18 mph, with gusts as high as 28 mph.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 47. Southwest wind 13 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 43. Southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Wednesday
A 40 percent chance of rain, mainly before 4pm. Partly sunny, with a high near 50.
Wednesday Night
A 20 percent chance of rain before 10pm. Snow level 8100 feet. Partly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Mostly clear, with a low around 39.
Friday
Sunny, with a high near 52.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 51.
Saturday Night
A slight chance of rain. Snow level 7200 feet. Partly cloudy, with a low around 39.
Sunday
A chance of rain. Snow level 6900 feet. Partly sunny, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles NNE Happy Camp CA
 42.02°N 123.27°W (Elev. 5052 ft)
Last Update:
3:41 pm PST Dec 7, 2025
Forecast Valid:
7pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation