Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East; Severe Storm Threat in the Gulf States Sunday

A significant winter storm is underway, bringing widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Extremely cold air will follow, prolonging dangerous travel and infrastructure impacts into next week. Severe thunderstorms may produce damaging gusts and tornadoes across the eastern Gulf Coast states Sunday morning and afternoon. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

20°F

-7°C

Humidity 94%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Last update 25 Jan 01:52 AM PST
Extended Forecast for

17 Miles SSE Agness OR

  • Overnight

    Overnight: Partly cloudy, with a low around 43. East southeast wind around 10 mph.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 52. East southeast wind around 7 mph becoming south southwest in the afternoon.

    High: 52 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 43. South wind around 7 mph.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 53. South southwest wind 6 to 9 mph.

    High: 53 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45. Southeast wind around 7 mph.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 4pm.  Snow level 4200 feet rising to 5000 feet in the afternoon. Partly sunny, with a high near 51.

    High: 51 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 10pm.  Mostly cloudy, with a low around 42. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain.  Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain.  Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 43. East southeast wind around 10 mph.
Sunday
Mostly cloudy, with a high near 52. East southeast wind around 7 mph becoming south southwest in the afternoon.
Sunday Night
Mostly cloudy, with a low around 43. South wind around 7 mph.
Monday
Partly sunny, with a high near 53. South southwest wind 6 to 9 mph.
Monday Night
Mostly cloudy, with a low around 45. Southeast wind around 7 mph.
Tuesday
A 30 percent chance of rain, mainly after 4pm. Snow level 4200 feet rising to 5000 feet in the afternoon. Partly sunny, with a high near 51.
Tuesday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 42. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of rain. Mostly cloudy, with a high near 50.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 44.
Thursday
A chance of rain, mainly before 10am. Partly sunny, with a high near 53.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 46.
Friday
A chance of rain. Mostly cloudy, with a high near 55.
Friday Night
A chance of rain. Mostly cloudy, with a low around 47.
Saturday
A chance of rain. Mostly cloudy, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
2:06 am PST Jan 25, 2026
2am PST Jan 25, 2026-6pm PST Jan 31, 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