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

Above Average Temperatures for Most Today; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures are forecast today into Wednesday over most of the lower 48 states away from the Gulf Coast. A storm system passing across southern Canada will bring a wintry mix to the upper Great Lakes today. A trailing cold front will then bring the wintry mix from the central Appalachians through the Northeast U.S. Wednesday and Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

42°F

6°C

Humidity 90%
Wind Speed NE 2 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 13 Jan 03:52 PM PST
Extended Forecast for

17 Miles SSE Agness OR

Air Stagnation Advisory January 13, 04:56pm until January 16, 10:00am
Freezing Fog Advisory January 14, 12:00am until January 14, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 13, 04:56pm until January 16, 10:00am

    NOW until 10:00am Fri

    Air Stagnation Advisory

  • Tonight

    Low: 51 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 61. Northeast wind around 10 mph.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 45. East northeast wind around 16 mph, with gusts as high as 28 mph.

    Low: 45 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 60. East northeast wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 42. East wind 11 to 13 mph, with gusts as high as 20 mph.

    Low: 42 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a steady temperature around 51. East wind 6 to 10 mph.
Wednesday
Sunny, with a high near 61. Northeast wind around 10 mph.
Wednesday Night
Clear, with a low around 45. East northeast wind around 16 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 60. East northeast wind 11 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Clear, with a low around 42. East wind 11 to 13 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 61.
Friday Night
Clear, with a low around 41.
Saturday
Sunny, with a high near 59.
Saturday Night
Clear, with a low around 42.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 42.
M.L.King Day
Sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
A slight chance of rain. Snow level 5400 feet. Partly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
Last Update:
3:36 pm PST Jan 13, 2026
Forecast Valid:
4pm PST Jan 13, 2026-6pm PST Jan 20, 2026
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation