Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

58°F

14°C

Humidity 41%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 23 Jan 01:52 PM PST
Extended Forecast for

14 Miles SE Agness OR

Air Stagnation Advisory January 23, 02:33pm until January 23, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 23, 02:33pm until January 23, 04:00pm

    NOW until 4:00pm Fri

    Air Stagnation Advisory

  • This Afternoon

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 35. East wind around 8 mph.

    Low: 35 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 52. East wind 6 to 8 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40. East wind around 7 mph.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 51. South wind around 6 mph.

    High: 51 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 49. Northeast wind around 7 mph.
Tonight
Clear, with a low around 35. East wind around 8 mph.
Saturday
Sunny, with a high near 52. East wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 40. East wind around 7 mph.
Sunday
Mostly cloudy, with a high near 51. South wind around 6 mph.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 54.
Tuesday Night
A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 43.
Wednesday
A chance of rain. Snow level 5500 feet. Partly sunny, with a high near 51.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 55.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles SE Agness OR
 42.42°N 123.87°W (Elev. 2461 ft)
2:21 pm PST Jan 23, 2026
2pm PST Jan 23, 2026-6pm PST Jan 29, 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