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

51°F

11°C

Humidity 68%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 21 Jan 04:52 PM PST
Extended Forecast for

16 Miles NE Happy Camp CA

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 58. Light and variable wind.

    High: 58 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. South wind around 6 mph becoming north after midnight.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51. North northeast wind 7 to 10 mph.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 37. East wind around 9 mph.

    Low: 37 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 43. Light and variable wind.
Thursday
Sunny, with a high near 58. Light and variable wind.
Thursday Night
Mostly clear, with a low around 44. South wind around 6 mph becoming north after midnight.
Friday
Sunny, with a high near 51. North northeast wind 7 to 10 mph.
Friday Night
Clear, with a low around 37. East wind around 9 mph.
Saturday
Sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Partly sunny, with a high near 50.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Mostly sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 53.
Tuesday Night
A slight chance of showers. Snow level 5600 feet. Mostly cloudy, with a low around 40.
Wednesday
A chance of showers. Snow level 5300 feet rising to 5900 feet in the afternoon. Partly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles NE Happy Camp CA
 41.97°N 123.17°W (Elev. 2999 ft)
Last Update:
3:41 pm PST Jan 21, 2026
Forecast Valid:
5pm PST Jan 21, 2026-6pm PST Jan 28, 2026
 
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Additional Resources

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