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

30°F

-1°C

Humidity 98%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 31 Jan 02:52 AM PST
Extended Forecast for

12 Miles NNE Happy Camp CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 42. South southwest wind around 15 mph.

    Low: 42 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 50. South wind around 10 mph.

    High: 50 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Rain and snow likely, mainly after 4am.  Snow level 6000 feet lowering to 5400 feet after midnight . Mostly cloudy, with a low around 37. South wind around 11 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 37 °F

    Mostly Cloudy
    then
    Rain/Snow
    Likely

  • Sunday

    Sunday: Rain likely, possibly mixed with snow before 10am, then a chance of rain.  Snow level 6100 feet. Partly sunny, with a high near 38. South southwest wind 10 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 38 °F

    Rain/Snow
    Likely then
    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. South southwest wind around 7 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Monday Night

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

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 42. South southwest wind around 15 mph.
Saturday
Partly sunny, with a high near 50. South wind around 10 mph.
Saturday Night
Rain and snow likely, mainly after 4am. Snow level 6000 feet lowering to 5400 feet after midnight . Mostly cloudy, with a low around 37. South wind around 11 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday
Rain likely, possibly mixed with snow before 10am, then a chance of rain. Snow level 6100 feet. Partly sunny, with a high near 38. South southwest wind 10 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday Night
Partly cloudy, with a low around 35. South southwest wind around 7 mph.
Monday
Mostly sunny, with a high near 43.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Mostly sunny, with a high near 54.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Sunny, with a high near 54.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly clear, with a low around 40.
Friday
Sunny, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNE Happy Camp CA
 41.96°N 123.25°W (Elev. 5138 ft)
3:41 am PST Jan 31, 2026
3am PST Jan 31, 2026-6pm PST Feb 6, 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