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

26°F

-3°C

Humidity 98%
Wind Speed N 0 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 19 Jan 12:52 AM PST
Extended Forecast for

12 Miles NE Happy Camp CA

  • Overnight

    Overnight: Mostly clear, with a low around 42. East wind around 6 mph.

    Low: 42 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 50. East wind around 7 mph.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. East southeast wind 5 to 7 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 50. Light south wind.

    High: 50 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42. South wind 6 to 8 mph.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Thursday Night

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

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 42. East wind around 6 mph.
M.L.King Day
Sunny, with a high near 50. East wind around 7 mph.
Monday Night
Mostly clear, with a low around 45. East southeast wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 50. Light south wind.
Tuesday Night
Mostly cloudy, with a low around 42. South wind 6 to 8 mph.
Wednesday
Partly sunny, with a high near 49.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Sunny, with a high near 45.
Thursday Night
Mostly clear, with a low around 33.
Friday
Mostly sunny, with a high near 41.
Friday Night
Mostly cloudy, with a low around 32.
Saturday
Partly sunny, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 33.
Sunday
A slight chance of rain and snow. Mostly sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NE Happy Camp CA
 41.92°N 123.21°W (Elev. 5666 ft)
12:41 am PST Jan 19, 2026
1am 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