National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

31°F

-1°C

Humidity 98%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 21 Jan 08:52 PM PST
Extended Forecast for

11 Miles NNE Happy Camp CA

  • Tonight

    Tonight: Partly cloudy, with a low around 40. Light west wind.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 48. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 48 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35. North wind around 8 mph.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 41. North northeast wind 8 to 10 mph.

    High: 41 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 30. East wind around 10 mph.

    Low: 30 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 40. Light west wind.
Thursday
Sunny, with a high near 48. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 35. North wind around 8 mph.
Friday
Sunny, with a high near 41. North northeast wind 8 to 10 mph.
Friday Night
Clear, with a low around 30. East wind around 10 mph.
Saturday
Sunny, with a high near 42.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Partly sunny, with a high near 43.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 44.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Mostly sunny, with a high near 46.
Tuesday Night
A slight chance of rain and snow showers. Snow level 5700 feet. Mostly cloudy, with a low around 37.
Wednesday
A chance of rain and snow showers. Snow level 5400 feet rising to 6000 feet in the afternoon. Partly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NNE Happy Camp CA
 41.95°N 123.28°W (Elev. 4839 ft)
Last Update:
8:31 pm PST Jan 21, 2026
Forecast Valid:
9pm PST Jan 21, 2026-6pm PST Jan 28, 2026
 
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Additional Resources

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