Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

32°F

0°C

Humidity 98%
Wind Speed NE 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 30 Dec 10:52 AM PST
Extended Forecast for

5 Miles NNW Cave Junction OR

Air Stagnation Advisory December 30, 11:22am until December 31, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory December 30, 11:22am until December 31, 04:00pm

    NOW until 4:00pm Wed

    Air Stagnation Advisory

  • Today

    High: 48 °F

    Fog

  • Tonight

    Tonight: Widespread dense fog after 10pm. Widespread dense freezing fog after 10pm.  Otherwise, increasing clouds, with a low around 37. Light south wind.

    Low: 37 °F

    Dense
    Freezing Fog
    and Dense Fog

  • Wednesday

    Wednesday: A 30 percent chance of showers after 4pm.  Widespread fog before 11am. Widespread freezing fog before 10am.  Otherwise, partly sunny, with a high near 47. Calm wind.

    High: 47 °F

    Freezing Fog
    and Fog then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 10pm.  Mostly cloudy, with a low around 40. Calm wind.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Showers
    Likely

  • New Year's Day

    New Year's Day: Rain.  High near 49. Light south southeast wind.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain

  • Thursday Night

    Thursday Night: Rain.  Low around 44. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Rain

  • Friday

    Friday: Rain.  High near 51. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 51 °F

    Rain

  • Friday Night

    Friday Night: Rain.  Cloudy, with a low around 39.

    Low: 39 °F

    Rain

Detailed Forecast

Today
Widespread fog before noon. Otherwise, sunny, with a high near 48. Calm wind.
Tonight
Widespread dense fog after 10pm. Widespread dense freezing fog after 10pm. Otherwise, increasing clouds, with a low around 37. Light south wind.
Wednesday
A 30 percent chance of showers after 4pm. Widespread fog before 11am. Widespread freezing fog before 10am. Otherwise, partly sunny, with a high near 47. Calm wind.
Wednesday Night
Showers likely, mainly after 10pm. Mostly cloudy, with a low around 40. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
New Year's Day
Rain. High near 49. Light south southeast wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 44. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 51. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night
Rain. Cloudy, with a low around 39.
Saturday
Rain. Snow level 4300 feet. Cloudy, with a high near 45.
Saturday Night
Rain likely, mainly before 10pm. Snow level 3900 feet. Mostly cloudy, with a low around 36.
Sunday
Rain likely. Snow level 3700 feet rising to 4300 feet in the afternoon. Mostly cloudy, with a high near 46.
Sunday Night
Rain likely. Snow level 4300 feet. Mostly cloudy, with a low around 35.
Monday
Rain likely. Snow level 4400 feet. Mostly cloudy, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Cave Junction OR
 42.25°N 123.69°W (Elev. 1499 ft)
9:41 am PST Dec 30, 2025
11am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database