Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

31°F

-1°C

Humidity 99%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 21 Jan 08:52 AM PST
Extended Forecast for

8 Miles NW Cave Junction OR

Air Stagnation Advisory January 21, 09:31am until January 21, 04:00pm
Freezing Fog Advisory January 21, 09:31am until January 21, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 21, 09:31am until January 21, 04:00pm
    Freezing Fog Advisory January 21, 09:31am until January 21, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 52 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Calm wind becoming east 5 to 7 mph in the evening.

    Low: 43 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 51. Northeast wind around 8 mph.

    High: 51 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. Northeast wind around 11 mph.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 45. Northeast wind around 11 mph.

    High: 45 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 31.

    Low: 31 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 52. Southeast wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Calm wind becoming east 5 to 7 mph in the evening.
Thursday
Sunny, with a high near 51. Northeast wind around 8 mph.
Thursday Night
Mostly clear, with a low around 37. Northeast wind around 11 mph.
Friday
Sunny, with a high near 45. Northeast wind around 11 mph.
Friday Night
Clear, with a low around 31.
Saturday
Sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Partly sunny, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 46.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Partly sunny, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NW Cave Junction OR
 42.24°N 123.75°W (Elev. 4163 ft)
5:01 am PST Jan 21, 2026
9am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database