Major Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold in the North-Central U.S.

A large, long-duration winter storm is expected to bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies/Plains into the Mid-South beginning Friday, spreading eastward to the Mid-Atlantic and New England this weekend. An Arctic front will bring frigid temperatures and gusty winds that will lead to dangerous wind chills from the Northern Plains and Upper Midwest. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

29°F

-2°C

Humidity 98%
Wind Speed SW 0 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 22 Jan 05:52 AM PST
Extended Forecast for

17 Miles SSE Agness OR

Air Stagnation Advisory January 22, 06:02am until January 23, 04:00pm
Freezing Fog Advisory January 22, 06:02am until January 22, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 22, 06:02am until January 23, 04:00pm
    Freezing Fog Advisory January 22, 06:02am until January 22, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 56 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 39. Northeast wind 6 to 10 mph.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51. Northeast wind around 10 mph.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 40. East northeast wind around 15 mph, with gusts as high as 23 mph.

    Low: 40 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 53. East northeast wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Today
Increasing clouds, with a high near 56. East wind around 6 mph becoming calm.
Tonight
Mostly clear, with a low around 39. Northeast wind 6 to 10 mph.
Friday
Sunny, with a high near 51. Northeast wind around 10 mph.
Friday Night
Clear, with a low around 40. East northeast wind around 15 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 53. East northeast wind 11 to 14 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Partly sunny, with a high near 51.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
A slight chance of rain. Snow level 5000 feet. Partly sunny, with a high near 53.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 45.
Wednesday
Rain likely. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
3:56 am PST Jan 22, 2026
6am PST Jan 22, 2026-6pm PST Jan 28, 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