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

30°F

-1°C

Humidity 98%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 20 Jan 11:52 PM PST
Extended Forecast for

9 Miles ENE Happy Camp CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 35. East wind around 5 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 58. Light northeast wind.

    High: 58 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 36. Light east southeast wind.

    Low: 36 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 56. Calm wind.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. Light east northeast wind.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 38.

    Low: 38 °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

Overnight
Mostly cloudy, with a low around 35. East wind around 5 mph.
Wednesday
Partly sunny, with a high near 58. Light northeast wind.
Wednesday Night
Mostly cloudy, with a low around 36. Light east southeast wind.
Thursday
Sunny, with a high near 56. Calm wind.
Thursday Night
Mostly clear, with a low around 33. Light east northeast wind.
Friday
Sunny, with a high near 56.
Friday Night
Clear, with a low around 38.
Saturday
Sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Partly sunny, with a high near 54.
Sunday Night
Mostly cloudy, with a low around 34.
Monday
Mostly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
A slight chance of rain. Partly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Happy Camp CA
 41.84°N 123.19°W (Elev. 1421 ft)
9:41 pm PST Jan 20, 2026
12am 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