Frigid Airmass to Bring Significantly Colder Temperatures; Heavy Lake-effect Snow; Fire Concerns Across the Central Gulf Coast

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Temperatures will tie or break many records across the Southeast through tonight. Moderate to heavy lake effect snow will continue downwind of the Great Lakes. Gusty winds and dry conditions will support an elevated fire weather threat across the Central Gulf Coast. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

46°F

8°C

Humidity 98%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 10 Nov 06:52 AM PST
Extended Forecast for

Illinois Valley OR

Dense Fog Advisory until November 10, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until November 10, 09:00am

    NOW until 9:00am Mon

    Dense Fog Advisory

  • Today

    High: 67 °F

    Areas Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Patchy fog after midnight.  Otherwise, partly cloudy, with a low around 44. Light and variable wind.

    Low: 44 °F

    Partly Cloudy
    then Patchy
    Fog

  • Veterans Day

    Veterans Day: Areas of dense fog before 10am.  Otherwise, partly sunny, with a high near 65. Light and variable wind.

    High: 65 °F

    Areas Dense
    Fog then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45. Calm wind becoming south around 5 mph.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of rain, mainly after 10am.  Mostly cloudy, with a high near 66. South southwest wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 66 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain.  Low around 38. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 38 °F

    Rain

  • Thursday

    Thursday: Rain.  Snow level 4400 feet. High near 48. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 48 °F

    Rain

  • Thursday Night

    Thursday Night: Rain.  Snow level 4000 feet. Cloudy, with a low around 34.

    Low: 34 °F

    Rain

Detailed Forecast

Today
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 67. Calm wind.
Tonight
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 44. Light and variable wind.
Veterans Day
Areas of dense fog before 10am. Otherwise, partly sunny, with a high near 65. Light and variable wind.
Tuesday Night
Mostly cloudy, with a low around 45. Calm wind becoming south around 5 mph.
Wednesday
A 50 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 66. South southwest wind 5 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Rain. Low around 38. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday
Rain. Snow level 4400 feet. High near 48. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Snow level 4000 feet. Cloudy, with a low around 34.
Friday
Rain. Snow level 4100 feet rising to 4900 feet in the afternoon. Mostly cloudy, with a high near 49.
Friday Night
Rain likely. Mostly cloudy, with a low around 38.
Saturday
Rain likely. Mostly cloudy, with a high near 54.
Saturday Night
Rain likely. Mostly cloudy, with a low around 41.
Sunday
Rain. Cloudy, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.09°N 123.68°W (Elev. 1394 ft)
5:31 am PST Nov 10, 2025
7am PST Nov 10, 2025-6pm PST Nov 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database