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

Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

42°F

6°C

Humidity 73%
Wind Speed ENE 2 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 27 Jan 11:52 AM PST
Extended Forecast for

11 Miles NNE Happy Camp CA

  • This Afternoon

    This Afternoon: Rain before 5pm, then rain, possibly mixed with snow. Snow level 5300 feet. High near 45. Breezy, with a south southwest wind 20 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow and
    Breezy

  • Tonight

    Tonight: A chance of rain and snow before 5am, then a chance of snow. Snow level 5000 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 33. South southwest wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of snow before 1pm, then a slight chance of rain and snow. Snow level rising to 4800 feet in the afternoon. Mostly cloudy, with a high near 42. South wind around 13 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 42 °F

    Chance Snow
    then Slight
    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Snow level 5400 feet. Mostly cloudy, with a low around 38. South wind 11 to 13 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Chance Rain

  • Thursday

    Thursday: A 30 percent chance of rain, mainly before 10am. Snow level 5600 feet rising to 6500 feet in the afternoon. Partly sunny, with a high near 47. South wind 11 to 13 mph, with gusts as high as 18 mph.

    High: 47 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 10pm. Snow level 6700 feet. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of rain after 10am. Snow level 6100 feet. Partly sunny, with a high near 51.

    High: 51 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Rain before 5pm, then rain, possibly mixed with snow. Snow level 5300 feet. High near 45. Breezy, with a south southwest wind 20 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tonight
A chance of rain and snow before 5am, then a chance of snow. Snow level 5000 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 33. South southwest wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday
A chance of snow before 1pm, then a slight chance of rain and snow. Snow level rising to 4800 feet in the afternoon. Mostly cloudy, with a high near 42. South wind around 13 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday Night
A 50 percent chance of rain. Snow level 5400 feet. Mostly cloudy, with a low around 38. South wind 11 to 13 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of rain, mainly before 10am. Snow level 5600 feet rising to 6500 feet in the afternoon. Partly sunny, with a high near 47. South wind 11 to 13 mph, with gusts as high as 18 mph.
Thursday Night
A 20 percent chance of rain before 10pm. Snow level 6700 feet. Mostly cloudy, with a low around 40.
Friday
A 20 percent chance of rain after 10am. Snow level 6100 feet. Partly sunny, with a high near 51.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Partly sunny, with a high near 53.
Saturday Night
A slight chance of rain after 10pm. Snow level 6500 feet. Mostly cloudy, with a low around 41.
Sunday
A chance of rain. Snow level 5900 feet. Partly sunny, with a high near 48.
Sunday Night
A chance of rain. Snow level 5700 feet. Mostly cloudy, with a low around 38.
Monday
A slight chance of rain and snow. Snow level 5200 feet rising to 5900 feet in the afternoon. Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NNE Happy Camp CA
 41.94°N 123.25°W (Elev. 4360 ft)
Last Update:
9:41 am PST Jan 27, 2026
Forecast Valid:
12pm PST Jan 27, 2026-6pm PST Feb 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation