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

52°F

11°C

Humidity 97%
Wind Speed ENE 0 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 02 Jan 01:52 PM PST
Extended Forecast for

12 Miles NNE Happy Camp CA

Winter Storm Warning January 3, 04:00pm until January 4, 04:00pm
Click here for hazard details and duration
Winter Storm Warning

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 42. Breezy, with a south southeast wind around 22 mph, with gusts as high as 32 mph.

    High: 42 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Rain, possibly mixed with snow, mainly before 5am. Snow level 6500 feet lowering to 5700 feet after midnight . Low around 35. South wind 17 to 21 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain then
    Rain/Snow

  • Saturday

    Saturday: Snow, possibly mixed with rain. Snow level 5300 feet. High near 38. Breezy, with a south wind 15 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 38 °F

    Rain/Snow
    Likely then
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: Rain and snow. Snow level 5100 feet. Low around 34. Windy, with a south southwest wind 28 to 32 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 34 °F

    Rain/Snow and
    Windy

  • Sunday

    Sunday: Snow. High near 36. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 36 °F

    Snow and
    Breezy

  • Sunday Night

    Sunday Night: Snow. Low around 32. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 32 °F

    Snow

  • Monday

    Monday: Snow, mainly before 4pm. High near 33. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 33 °F

    Snow

  • Monday Night

    Monday Night: A chance of snow before 10pm. Mostly cloudy, with a low around 29.

    Low: 29 °F

    Chance Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Snow likely, mainly after 4pm. Mostly cloudy, with a high near 35.

    High: 35 °F

    Snow Likely

Detailed Forecast

This Afternoon
Partly sunny, with a high near 42. Breezy, with a south southeast wind around 22 mph, with gusts as high as 32 mph.
Tonight
Rain, possibly mixed with snow, mainly before 5am. Snow level 6500 feet lowering to 5700 feet after midnight . Low around 35. South wind 17 to 21 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Saturday
Snow, possibly mixed with rain. Snow level 5300 feet. High near 38. Breezy, with a south wind 15 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Saturday Night
Rain and snow. Snow level 5100 feet. Low around 34. Windy, with a south southwest wind 28 to 32 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Sunday
Snow. High near 36. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
Snow. Low around 32. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Monday
Snow, mainly before 4pm. High near 33. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Monday Night
A chance of snow before 10pm. Mostly cloudy, with a low around 29.
Tuesday
Snow likely, mainly after 4pm. Mostly cloudy, with a high near 35.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 31.
Wednesday
Snow. Mostly cloudy, with a high near 32.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 26.
Thursday
A chance of snow. Partly sunny, with a high near 33.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNE Happy Camp CA
 41.96°N 123.25°W (Elev. 5138 ft)
Last Update:
12:46 pm PST Jan 2, 2026
Forecast Valid:
2pm PST Jan 2, 2026-6pm PST Jan 8, 2026
 
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