Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

43°F

6°C

Humidity 87%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 20 Jan 05:52 PM PST
Extended Forecast for

11 Miles WSW Wilderville OR

Air Stagnation Advisory January 20, 06:54pm until January 21, 04:00pm
Freezing Fog Advisory January 20, 07:00pm until January 21, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 20, 06:54pm until January 21, 04:00pm

    NOW until 4:00pm Wed

    Air Stagnation Advisory

  • Tonight

    Low: 48 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 52. North northeast wind 5 to 9 mph becoming calm  in the afternoon.

    High: 52 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. Calm wind becoming north 5 to 8 mph in the evening.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 49. North wind around 8 mph.

    High: 49 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35. North northeast wind around 11 mph.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 36.

    Low: 36 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

Detailed Forecast

Tonight
Mostly cloudy, with a low around 48. Calm wind becoming east 5 to 9 mph in the evening.
Wednesday
Mostly cloudy, with a high near 52. North northeast wind 5 to 9 mph becoming calm in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 42. Calm wind becoming north 5 to 8 mph in the evening.
Thursday
Sunny, with a high near 49. North wind around 8 mph.
Thursday Night
Mostly clear, with a low around 35. North northeast wind around 11 mph.
Friday
Sunny, with a high near 44.
Friday Night
Clear, with a low around 36.
Saturday
Sunny, with a high near 45.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Partly sunny, with a high near 45.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 46.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
A slight chance of rain. Snow level 5400 feet. Partly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Wilderville OR
 42.34°N 123.66°W (Elev. 4183 ft)
3:41 pm PST Jan 20, 2026
6pm PST Jan 20, 2026-6pm PST Jan 27, 2026
 
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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