Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

42°F

6°C

Humidity 97%
Wind Speed ESE 3 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 27 Dec 12:52 PM PST
Extended Forecast for

8 Miles WNW Illinois Valley OR

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 35. North northeast wind around 8 mph.

    High: 35 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 29. Northeast wind around 11 mph, with gusts as high as 18 mph.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 39. Northeast wind around 10 mph, with gusts as high as 21 mph.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. East northeast wind around 9 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 46. East northeast wind 7 to 9 mph.

    High: 46 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 35. North northeast wind around 8 mph.
Tonight
Mostly cloudy, with a low around 29. Northeast wind around 11 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 39. Northeast wind around 10 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 32. East northeast wind around 9 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 46. East northeast wind 7 to 9 mph.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Sunny, with a high near 48.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Sunny, with a high near 49.
Wednesday Night
A slight chance of rain after 10pm. Snow level 6000 feet. Partly cloudy, with a low around 38.
New Year's Day
Rain likely. Snow level 5200 feet. Partly sunny, with a high near 44.
Thursday Night
Rain and snow. Snow level 4500 feet. Mostly cloudy, with a low around 37.
Friday
Rain and snow likely. Snow level 3700 feet. Mostly cloudy, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WNW Illinois Valley OR
 42.14°N 123.81°W (Elev. 3209 ft)
12:41 pm PST Dec 27, 2025
1pm PST Dec 27, 2025-6pm PST Jan 2, 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