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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

48°F

9°C

Humidity 99%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 02 Jan 09:52 PM PST
Extended Forecast for

12 Miles NE Happy Camp CA

Winter Storm Warning January 3, 04:00pm until January 5, 04:00pm
Click here for hazard details and duration
Winter Storm Warning

  • Tonight

    Tonight: Rain before 1am, then rain, possibly mixed with snow between 1am and 3am, then snow likely after 3am. Snow level 6400 feet lowering to 5700 feet. Low around 34. South wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain then
    Rain/Snow

  • Saturday

    Saturday: Snow. High near 37. South wind 13 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Snow Likely
    then Snow

  • Saturday Night

    Saturday Night: Snow. The snow could be heavy at times. Steady temperature around 36. Windy, with a south wind 28 to 31 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    Low: 36 °F

    Heavy Snow
    and Windy

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 35. South southwest wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 35 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Low around 31. South southwest wind around 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 31 °F

    Heavy Snow

  • Monday

    Monday: Snow, mainly before 4pm. The snow could be heavy at times. High near 32. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 32 °F

    Heavy Snow

  • Monday Night

    Monday Night: A 30 percent chance of snow before 10pm. Mostly cloudy, with a low around 29. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Snow likely, mainly after 4pm. Mostly cloudy, with a high near 33.

    High: 33 °F

    Snow Likely

  • Tuesday Night

    Tuesday Night: Snow likely. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Snow Likely

Detailed Forecast

Tonight
Rain before 1am, then rain, possibly mixed with snow between 1am and 3am, then snow likely after 3am. Snow level 6400 feet lowering to 5700 feet. Low around 34. South wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Saturday
Snow. High near 37. South wind 13 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Saturday Night
Snow. The snow could be heavy at times. Steady temperature around 36. Windy, with a south wind 28 to 31 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Sunday
Snow. The snow could be heavy at times. High near 35. South southwest wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Sunday Night
Snow. The snow could be heavy at times. Low around 31. South southwest wind around 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Monday
Snow, mainly before 4pm. The snow could be heavy at times. High near 32. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Monday Night
A 30 percent chance of snow before 10pm. Mostly cloudy, with a low around 29. New snow accumulation of less than a half inch possible.
Tuesday
Snow likely, mainly after 4pm. Mostly cloudy, with a high near 33.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 30.
Wednesday
Snow. Mostly cloudy, with a high near 31.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 24.
Thursday
A chance of snow. Partly sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Mostly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NE Happy Camp CA
 41.92°N 123.21°W (Elev. 5666 ft)
Last Update:
9:41 pm PST Jan 2, 2026
Forecast Valid:
10pm PST Jan 2, 2026-6pm PST Jan 9, 2026
 
Forecast Discussion
 
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Additional Resources

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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