Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

29°F

-2°C

Humidity 98%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 21 Jan 12:52 AM PST
Extended Forecast for

13 Miles NE Happy Camp CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 43. South southeast wind around 13 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49. South southeast wind 6 to 11 mph becoming light south southwest  in the afternoon.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Light west northwest wind becoming north 5 to 10 mph in the evening.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 47. North northwest wind 8 to 10 mph.

    High: 47 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. North northwest wind around 9 mph.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 30.

    Low: 30 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 43. South southeast wind around 13 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 49. South southeast wind 6 to 11 mph becoming light south southwest in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 41. Light west northwest wind becoming north 5 to 10 mph in the evening.
Thursday
Sunny, with a high near 47. North northwest wind 8 to 10 mph.
Thursday Night
Mostly clear, with a low around 33. North northwest wind around 9 mph.
Friday
Sunny, with a high near 41.
Friday Night
Clear, with a low around 30.
Saturday
Sunny, with a high near 40.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 32.
Monday
Partly sunny, with a high near 42.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
A chance of rain. Partly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NE Happy Camp CA
 41.93°N 123.18°W (Elev. 5801 ft)
12:41 am PST Jan 21, 2026
1am PST Jan 21, 2026-6pm PST Jan 27, 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