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

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

44°F

7°C

Humidity 88%
Wind Speed ENE 0 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 26 Dec 01:52 PM PST
Extended Forecast for

9 Miles WNW Illinois Valley OR

  • This Afternoon

    This Afternoon: A chance of rain and snow showers before 3pm, then snow showers likely. Snow level 3800 feet. Mostly cloudy, with a high near 36. Northwest wind around 6 mph. Chance of precipitation is 60%. Total daytime snow accumulation of around an inch possible.

    High: 36 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: A chance of rain and snow showers before 1am, then a chance of snow showers after 3am. Mostly cloudy, with a low around 28. North wind 3 to 7 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Saturday

    Saturday: A 30 percent chance of snow showers, mainly before 7am. Mostly sunny, with a high near 34. Northeast wind 5 to 8 mph. Little or no snow accumulation expected.

    High: 34 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27. East northeast wind around 11 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 40. East northeast wind 11 to 13 mph, with gusts as high as 21 mph.

    High: 40 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of rain and snow showers before 3pm, then snow showers likely. Snow level 3800 feet. Mostly cloudy, with a high near 36. Northwest wind around 6 mph. Chance of precipitation is 60%. Total daytime snow accumulation of around an inch possible.
Tonight
A chance of rain and snow showers before 1am, then a chance of snow showers after 3am. Mostly cloudy, with a low around 28. North wind 3 to 7 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow showers, mainly before 7am. Mostly sunny, with a high near 34. Northeast wind 5 to 8 mph. Little or no snow accumulation expected.
Saturday Night
Mostly cloudy, with a low around 27. East northeast wind around 11 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 40. East northeast wind 11 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Sunny, with a high near 45.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Mostly clear, with a low around 35.
Wednesday
Mostly sunny, with a high near 48.
Wednesday Night
A slight chance of showers. Snow level 5600 feet. Mostly cloudy, with a low around 37.
New Year's Day
Showers likely. Snow level 4800 feet. Mostly cloudy, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WNW Illinois Valley OR
 42.15°N 123.85°W (Elev. 3356 ft)
Last Update:
2:21 pm PST Dec 26, 2025
Forecast Valid:
2pm PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

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Chance of Precipitation