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Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. 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 69%
Wind Speed ENE 1 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 17 Jan 12:52 PM PST
Extended Forecast for

17 Miles WNW Illinois Valley OR

Air Stagnation Advisory January 17, 01:26pm until January 20, 10:00am
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 17, 01:26pm until January 20, 10:00am

    NOW until 10:00am Tue

    Air Stagnation Advisory

  • This Afternoon

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 50. South southeast wind around 10 mph.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 56. East southeast wind 5 to 11 mph becoming north in the afternoon.

    High: 56 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49. East northeast wind 10 to 14 mph.

    Low: 49 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 57. East northeast wind 13 to 17 mph, with gusts as high as 20 mph.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 51.

    Low: 51 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 57. West southwest wind 3 to 6 mph.
Tonight
Partly cloudy, with a low around 50. South southeast wind around 10 mph.
Sunday
Mostly sunny, with a high near 56. East southeast wind 5 to 11 mph becoming north in the afternoon.
Sunday Night
Mostly clear, with a low around 49. East northeast wind 10 to 14 mph.
M.L.King Day
Sunny, with a high near 57. East northeast wind 13 to 17 mph, with gusts as high as 20 mph.
Monday Night
Clear, with a low around 51.
Tuesday
Sunny, with a high near 59.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Mostly sunny, with a high near 49.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
Partly cloudy, with a low around 36.
Friday
A slight chance of rain and snow. Mostly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.18°N 123.98°W (Elev. 4344 ft)
Last Update:
12:41 pm PST Jan 17, 2026
Forecast Valid:
1pm PST Jan 17, 2026-6pm PST Jan 23, 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