Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

32°F

0°C

Humidity 98%
Wind Speed ESE 1 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 19 Jan 10:52 AM PST
Extended Forecast for

12 Miles NNE Happy Camp CA

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 52. East southeast wind around 6 mph.

    High: 52 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. South southeast wind 3 to 6 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 52. South southwest wind around 5 mph.

    High: 52 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46. South wind 7 to 9 mph.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50. South wind 5 to 9 mph becoming light and variable  in the afternoon.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

Detailed Forecast

M.L.King Day
Sunny, with a high near 52. East southeast wind around 6 mph.
Tonight
Mostly clear, with a low around 45. South southeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 52. South southwest wind around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 46. South wind 7 to 9 mph.
Wednesday
Partly sunny, with a high near 50. South wind 5 to 9 mph becoming light and variable in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 46.
Thursday Night
Mostly clear, with a low around 33.
Friday
Sunny, with a high near 42.
Friday Night
Mostly clear, with a low around 32.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
A slight chance of rain and snow. Snow level rising to 5500 feet in the afternoon. Partly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNE Happy Camp CA
 41.96°N 123.25°W (Elev. 5138 ft)
9:51 am PST Jan 19, 2026
11am PST Jan 19, 2026-6pm PST Jan 25, 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