Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

37°F

3°C

Humidity 98%
Wind Speed E 1 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 31 Jan 09:52 PM PST
Extended Forecast for

12 Miles NNE Happy Camp CA

  • Tonight

    Tonight: A chance of rain and snow, mainly after 5am.  Snow level 5700 feet lowering to 5100 feet. Mostly cloudy, with a low around 36. South southwest wind around 10 mph.  Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 36 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of rain and snow before 10am, then a slight chance of rain between 10am and 11am.  Snow level 5700 feet. Partly sunny, with a high near 42. South southwest wind around 9 mph.  Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Chance
    Rain/Snow
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33. West wind around 6 mph.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 49. East southeast wind around 6 mph becoming north northeast in the afternoon.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38. Northeast wind 8 to 10 mph becoming east southeast after midnight.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Tuesday Night

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

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain and snow, mainly after 5am. Snow level 5700 feet lowering to 5100 feet. Mostly cloudy, with a low around 36. South southwest wind around 10 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
A chance of rain and snow before 10am, then a slight chance of rain between 10am and 11am. Snow level 5700 feet. Partly sunny, with a high near 42. South southwest wind around 9 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly clear, with a low around 33. West wind around 6 mph.
Monday
Sunny, with a high near 49. East southeast wind around 6 mph becoming north northeast in the afternoon.
Monday Night
Mostly clear, with a low around 38. Northeast wind 8 to 10 mph becoming east southeast after midnight.
Tuesday
Sunny, with a high near 54.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 56.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Sunny, with a high near 56.
Thursday Night
Mostly clear, with a low around 41.
Friday
Sunny, with a high near 53.
Friday Night
Partly cloudy, with a low around 40.
Saturday
A slight chance of rain. Snow level 6700 feet. Mostly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNE Happy Camp CA
 41.95°N 123.31°W (Elev. 4911 ft)
9:41 pm PST Jan 31, 2026
10pm PST Jan 31, 2026-6pm PST Feb 7, 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