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

38°F

3°C

Humidity 99%
Wind Speed WSW 1 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 27 Dec 02:52 AM PST
Extended Forecast for

9 Miles WNW Illinois Valley OR

  • Overnight

    Overnight: A 40 percent chance of snow showers, mainly before 5am. Patchy fog. Areas of freezing fog. Otherwise, mostly cloudy, with a steady temperature around 31. North northwest wind around 5 mph. Total nighttime snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance Snow
    Showers and
    Areas
    Freezing Fog

  • Saturday

    Saturday: A slight chance of snow showers before 7am, then a chance of snow showers after 10am. Patchy fog before 9am. Areas of freezing fog before 9am. Otherwise, mostly sunny, with a high near 34. Northeast wind 6 to 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 34 °F

    Chance Snow
    Showers and
    Areas
    Freezing Fog

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29. East northeast wind around 11 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 39. East northeast wind 11 to 13 mph, with gusts as high as 21 mph.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. East northeast wind around 9 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of snow showers, mainly before 5am. Patchy fog. Areas of freezing fog. Otherwise, mostly cloudy, with a steady temperature around 31. North northwest wind around 5 mph. Total nighttime snow accumulation of less than a half inch possible.
Saturday
A slight chance of snow showers before 7am, then a chance of snow showers after 10am. Patchy fog before 9am. Areas of freezing fog before 9am. Otherwise, mostly sunny, with a high near 34. Northeast wind 6 to 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday Night
Partly cloudy, with a low around 29. East northeast wind around 11 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 39. East northeast wind 11 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 33. East northeast wind around 9 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 46.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Sunny, with a high near 48.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Sunny, with a high near 49.
Wednesday Night
A slight chance of rain. Snow level 5900 feet. Partly cloudy, with a low around 38.
New Year's Day
Rain likely. Snow level 5200 feet. Partly sunny, with a high near 43.
Thursday Night
Rain and snow likely. Snow level 4500 feet. Mostly cloudy, with a low around 37.
Friday
Rain and snow. Snow level 3700 feet. Mostly cloudy, with a high near 40.
Basemap Options
Click map to change the forecast location
Loading map...
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:
2:11 am PST Dec 27, 2025
Forecast Valid:
3am PST Dec 27, 2025-6pm PST Jan 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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