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 >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

51°F

11°C

Humidity 98%
Wind Speed NE 1 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 02 Jan 11:52 AM PST
Extended Forecast for

8 Miles WNW Illinois Valley OR

  • This Afternoon

    This Afternoon: A 30 percent chance of rain before 4pm. Partly sunny, with a high near 48. South southeast wind 9 to 13 mph, with gusts as high as 29 mph.

    High: 48 °F

    Chance Rain

  • Tonight

    Tonight: Rain. Snow level 6700 feet lowering to 5500 feet after midnight . Low around 40. South wind 10 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 40 °F

    Rain

  • Saturday

    Saturday: Rain. Snow level 5200 feet. High near 44. Breezy, with a south wind 15 to 22 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 44 °F

    Rain and
    Breezy

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 1am, then rain after 1am. Some of the storms could produce heavy rainfall. Snow level 5200 feet. Low around 38. South southwest wind 18 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.

    Low: 38 °F

    Heavy Rain

  • Sunday

    Sunday: Rain. Snow level 4200 feet. High near 39. South southwest wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 39 °F

    Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then rain after 1am. Snow level 3900 feet. Low around 36. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain/Snow

  • Monday

    Monday: Rain, possibly mixed with snow, mainly before 4pm. Snow level 3900 feet. High near 39. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 39 °F

    Rain/Snow

  • Monday Night

    Monday Night: A chance of rain and snow, mainly before 10pm. Snow level 4000 feet. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance
    Rain/Snow

  • Tuesday

    Tuesday: A chance of rain and snow before 4pm, then rain likely. Snow level 4100 feet. Mostly cloudy, with a high near 40.

    High: 40 °F

    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
A 30 percent chance of rain before 4pm. Partly sunny, with a high near 48. South southeast wind 9 to 13 mph, with gusts as high as 29 mph.
Tonight
Rain. Snow level 6700 feet lowering to 5500 feet after midnight . Low around 40. South wind 10 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Rain. Snow level 5200 feet. High near 44. Breezy, with a south wind 15 to 22 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Saturday Night
Showers and possibly a thunderstorm before 1am, then rain after 1am. Some of the storms could produce heavy rainfall. Snow level 5200 feet. Low around 38. South southwest wind 18 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Sunday
Rain. Snow level 4200 feet. High near 39. South southwest wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Sunday Night
Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then rain after 1am. Snow level 3900 feet. Low around 36. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday
Rain, possibly mixed with snow, mainly before 4pm. Snow level 3900 feet. High near 39. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
A chance of rain and snow, mainly before 10pm. Snow level 4000 feet. Mostly cloudy, with a low around 33.
Tuesday
A chance of rain and snow before 4pm, then rain likely. Snow level 4100 feet. Mostly cloudy, with a high near 40.
Tuesday Night
Rain likely, possibly mixed with snow before 10pm, then rain between 10pm and 1am, then rain, possibly mixed with snow after 1am. Snow level 4300 feet. Mostly cloudy, with a low around 35.
Wednesday
Rain and snow. Snow level 3400 feet. Mostly cloudy, with a high near 38.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 31.
Thursday
A chance of snow. Partly sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WNW Illinois Valley OR
 42.14°N 123.81°W (Elev. 3209 ft)
Last Update:
11:46 am PST Jan 2, 2026
Forecast Valid:
12pm PST Jan 2, 2026-6pm PST Jan 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation