Heavy Snow in the Cascades and Northern Rockies; Wintry Mix in the Northeast; High Winds in Southern California

Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. today. High winds could blow down trees and power lines in the mountains of southern California this evening through Thursday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

40°F

4°C

Humidity 94%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 07 Jan 04:52 PM PST
Extended Forecast for

14 Miles SE Agness OR

Winter Weather Advisory January 7, 05:43pm until January 8, 10:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 7, 05:43pm until January 8, 10:00am

    NOW until 10:00am Thu

    Winter Weather Advisory

  • This Afternoon

    High: 37 °F

    Rain/Snow

  • Tonight

    Tonight: Snow showers likely, possibly mixed with rain, becoming all snow after 8pm. Some thunder is also possible.  Mostly cloudy, with a low around 32. West wind 3 to 7 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Rain/Snow
    Likely then
    Snow Likely

  • Thursday

    Thursday: A chance of snow before 7am, then a slight chance of rain and snow after 1pm.  Partly sunny, with a high near 39. Calm wind.  Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Chance Snow
    then Slight
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31. East wind 6 to 9 mph.

    Low: 31 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 47. East wind around 6 mph.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Snow showers, possibly mixed with rain. Some thunder is also possible. Snow level 2600 feet. Steady temperature around 37. West wind around 6 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow showers likely, possibly mixed with rain, becoming all snow after 8pm. Some thunder is also possible. Mostly cloudy, with a low around 32. West wind 3 to 7 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Thursday
A chance of snow before 7am, then a slight chance of rain and snow after 1pm. Partly sunny, with a high near 39. Calm wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday Night
Mostly cloudy, with a low around 31. East wind 6 to 9 mph.
Friday
Mostly sunny, with a high near 47. East wind around 6 mph.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Partly sunny, with a high near 48.
Saturday Night
Mostly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Mostly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Sunny, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
14 Miles SE Agness OR
 42.42°N 123.87°W (Elev. 2461 ft)
3:41 pm PST Jan 7, 2026
5pm PST Jan 7, 2026-6pm PST Jan 14, 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