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

37°F

3°C

Humidity 98%
Wind Speed E 1 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 19 Jan 11:52 AM PST
Extended Forecast for

16 Miles SE Agness OR

Air Stagnation Advisory January 19, 12:44pm until January 21, 04:00pm
Freezing Fog Advisory January 19, 08:00pm until January 20, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 19, 12:44pm until January 21, 04:00pm

    NOW until 4:00pm Wed

    Air Stagnation Advisory

  • M.L.King Day

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 48. East wind around 7 mph.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 57. East wind around 5 mph becoming calm  in the morning.

    High: 57 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 48. East southeast wind 3 to 5 mph.

    Low: 48 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 54. East southeast wind around 5 mph becoming light and variable  in the morning.

    High: 54 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

M.L.King Day
Sunny, with a high near 58. East wind 6 to 9 mph.
Tonight
Mostly clear, with a low around 48. East wind around 7 mph.
Tuesday
Mostly sunny, with a high near 57. East wind around 5 mph becoming calm in the morning.
Tuesday Night
Mostly cloudy, with a low around 48. East southeast wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 54. East southeast wind around 5 mph becoming light and variable in the morning.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 52.
Thursday Night
Mostly clear, with a low around 38.
Friday
Mostly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 51.
Saturday Night
A slight chance of rain. Snow level 5100 feet. Mostly cloudy, with a low around 41.
Sunday
A chance of rain. Snow level 5200 feet. Partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Agness OR
 42.4°N 123.83°W (Elev. 2582 ft)
11:51 am PST Jan 19, 2026
12pm PST Jan 19, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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