Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

47°F

8°C

Humidity 55%
Wind Speed NNE 10 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 28 Dec 02:52 PM PST
Extended Forecast for

9 Miles ENE Happy Camp CA

  • Tonight

    Tonight: Widespread freezing fog after 10pm. Mostly clear, with a low around 31. East northeast wind around 10 mph.

    Low: 31 °F

    Freezing Fog

  • Monday

    Monday: Widespread freezing fog before 11am. Sunny, with a high near 52. East northeast wind around 9 mph.

    High: 52 °F

    Freezing Fog
    then Sunny

  • Monday Night

    Monday Night: Widespread fog after 10pm.  Otherwise, mostly clear, with a low around 34. East northeast wind around 8 mph.

    Low: 34 °F

    Fog

  • Tuesday

    Tuesday: Widespread fog before noon.  Otherwise, sunny, with a high near 56. East wind 5 to 7 mph.

    High: 56 °F

    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Widespread fog after 10pm. Widespread freezing fog after 10pm.  Otherwise, partly cloudy, with a low around 36. Light east southeast wind.

    Low: 36 °F

    Freezing Fog
    and Fog

  • Wednesday

    Wednesday: A 10 percent chance of rain after 4pm.  Widespread fog before 11am. Widespread freezing fog before 10am.  Otherwise, mostly sunny, with a high near 56.

    High: 56 °F

    Freezing Fog
    and Fog then
    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after 10pm.  Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

  • New Year's Day

    New Year's Day: A chance of rain.  Mostly cloudy, with a high near 52.

    High: 52 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely.  Mostly cloudy, with a low around 40.

    Low: 40 °F

    Rain Likely

Detailed Forecast

Tonight
Widespread freezing fog after 10pm. Mostly clear, with a low around 31. East northeast wind around 10 mph.
Monday
Widespread freezing fog before 11am. Sunny, with a high near 52. East northeast wind around 9 mph.
Monday Night
Widespread fog after 10pm. Otherwise, mostly clear, with a low around 34. East northeast wind around 8 mph.
Tuesday
Widespread fog before noon. Otherwise, sunny, with a high near 56. East wind 5 to 7 mph.
Tuesday Night
Widespread fog after 10pm. Widespread freezing fog after 10pm. Otherwise, partly cloudy, with a low around 36. Light east southeast wind.
Wednesday
A 10 percent chance of rain after 4pm. Widespread fog before 11am. Widespread freezing fog before 10am. Otherwise, mostly sunny, with a high near 56.
Wednesday Night
A 30 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 38.
New Year's Day
A chance of rain. Mostly cloudy, with a high near 52.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40.
Friday
Rain likely. Mostly cloudy, with a high near 54.
Friday Night
Rain likely. Mostly cloudy, with a low around 38.
Saturday
Rain likely. Snow level 4500 feet. Mostly cloudy, with a high near 51.
Saturday Night
Rain likely. Snow level 4300 feet. Mostly cloudy, with a low around 37.
Sunday
Rain likely. Snow level 4000 feet rising to 4600 feet in the afternoon. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Happy Camp CA
 41.84°N 123.19°W (Elev. 1421 ft)
2:36 pm PST Dec 28, 2025
3pm PST Dec 28, 2025-6pm PST Jan 4, 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