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 >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

41°F

5°C

Humidity 92%
Wind Speed ENE 2 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 13 Jan 02:52 PM PST
Extended Forecast for

3 Miles SE Illinois Valley OR

Air Stagnation Advisory January 13, 03:49pm 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, 03:49pm until January 16, 10:00am

    NOW until 10:00am Fri

    Air Stagnation Advisory

  • Tonight

    Low: 31 °F

    Dense
    Freezing Fog
    and Dense Fog

  • Wednesday

    Wednesday: Widespread dense freezing fog before 9am. Cloudy through mid morning, then gradual clearing, with a high near 51. Calm wind.

    High: 51 °F

    Dense
    Freezing Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Widespread dense fog between 10pm and 5am. Widespread dense freezing fog after 5am.  Otherwise, mostly clear, with a low around 32. Light east northeast wind.

    Low: 32 °F

    Dense
    Freezing Fog
    and Dense Fog

  • Thursday

    Thursday: Widespread dense fog between 8am and 10am. Widespread dense freezing fog before 8am.  Otherwise, sunny, with a high near 52. Light east wind.

    High: 52 °F

    Dense
    Freezing Fog
    and Dense Fog
    then Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 36. Light east wind.

    Low: 36 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 36.

    Low: 36 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Tonight
Widespread dense fog between 8pm and midnight. Widespread dense freezing fog after midnight. Otherwise, increasing clouds, with a low around 31. Calm wind.
Wednesday
Widespread dense freezing fog before 9am. Cloudy through mid morning, then gradual clearing, with a high near 51. Calm wind.
Wednesday Night
Widespread dense fog between 10pm and 5am. Widespread dense freezing fog after 5am. Otherwise, mostly clear, with a low around 32. Light east northeast wind.
Thursday
Widespread dense fog between 8am and 10am. Widespread dense freezing fog before 8am. Otherwise, sunny, with a high near 52. Light east wind.
Thursday Night
Clear, with a low around 36. Light east wind.
Friday
Sunny, with a high near 53.
Friday Night
Clear, with a low around 36.
Saturday
Sunny, with a high near 61.
Saturday Night
Clear, with a low around 38.
Sunday
Sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 37.
M.L.King Day
Sunny, with a high near 59.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
Mostly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Illinois Valley OR
 42.08°N 123.65°W (Elev. 1644 ft)
3:36 pm PST Jan 13, 2026
3pm PST Jan 13, 2026-6pm PST Jan 20, 2026
 
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Additional Resources

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