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

27°F

-3°C

Humidity 98%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 19 Jan 10:52 PM PST
Extended Forecast for

17 Miles SSE Agness OR

Air Stagnation Advisory January 19, 11:55pm until January 21, 04:00pm
Freezing Fog Advisory until January 20, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 19, 11:55pm until January 21, 04:00pm
    Freezing Fog Advisory until January 20, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 50 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61. Calm wind.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 49. East wind 3 to 5 mph.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58. Light and variable wind.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45. East northeast wind around 5 mph.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 50. East wind around 6 mph.
Tuesday
Mostly sunny, with a high near 61. Calm wind.
Tuesday Night
Mostly cloudy, with a low around 49. East wind 3 to 5 mph.
Wednesday
Mostly cloudy, with a high near 58. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 45. East northeast wind around 5 mph.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly clear, with a low around 37.
Friday
Sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 39.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
A slight chance of rain. Snow level 5200 feet. Mostly cloudy, with a low around 41.
Sunday
A chance of rain. Snow level 5000 feet. Partly sunny, with a high near 51.
Sunday Night
A chance of rain. Snow level 5200 feet. Mostly cloudy, with a low around 43.
Monday
A slight chance of rain. Snow level 5300 feet. Partly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
9:41 pm PST Jan 19, 2026
11pm PST Jan 19, 2026-6pm PST Jan 26, 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