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

43°F

6°C

Humidity 87%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 20 Jan 05:52 PM PST
Extended Forecast for

Happy Camp CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. Calm wind becoming north 5 to 7 mph in the evening.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 56. North northeast wind around 5 mph becoming calm  in the morning.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. North northeast wind 3 to 5 mph.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 55. Light north northeast wind.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. Northeast wind 3 to 5 mph.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 32. Calm wind becoming north 5 to 7 mph in the evening.
Wednesday
Partly sunny, with a high near 56. North northeast wind around 5 mph becoming calm in the morning.
Wednesday Night
Mostly cloudy, with a low around 33. North northeast wind 3 to 5 mph.
Thursday
Sunny, with a high near 55. Light north northeast wind.
Thursday Night
Mostly clear, with a low around 33. Northeast wind 3 to 5 mph.
Friday
Sunny, with a high near 54.
Friday Night
Clear, with a low around 37.
Saturday
Sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Partly sunny, with a high near 53.
Sunday Night
Mostly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
A slight chance of rain. Partly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Happy Camp CA
 41.81°N 123.36°W (Elev. 1299 ft)
3:41 pm PST Jan 20, 2026
6pm PST Jan 20, 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