Above Average Temperatures in the West; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

35°F

2°C

Humidity 98%
Wind Speed E 0 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 12 Jan 05:52 PM PST
Extended Forecast for

17 Miles SSE Agness OR

Air Stagnation Advisory January 12, 06:54pm until January 16, 04:00am
Freezing Fog Advisory January 13, 02:00am until January 13, 11:00am
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 12, 06:54pm until January 16, 04:00am

    NOW until 4:00am Fri

    Air Stagnation Advisory

  • Tonight

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 62. East southeast wind around 5 mph becoming calm  in the morning.

    High: 62 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 46. East wind around 7 mph.

    Low: 46 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 59. East northeast wind around 11 mph.

    High: 59 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 44. East northeast wind around 18 mph, with gusts as high as 28 mph.

    Low: 44 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a steady temperature around 50. Calm wind becoming east southeast around 6 mph.
Tuesday
Sunny, with a high near 62. East southeast wind around 5 mph becoming calm in the morning.
Tuesday Night
Clear, with a low around 46. East wind around 7 mph.
Wednesday
Sunny, with a high near 59. East northeast wind around 11 mph.
Wednesday Night
Clear, with a low around 44. East northeast wind around 18 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 60.
Thursday Night
Clear, with a low around 42.
Friday
Sunny, with a high near 61.
Friday Night
Clear, with a low around 41.
Saturday
Sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 42.
M.L.King Day
Mostly sunny, with a high near 57.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
3:40 pm PST Jan 12, 2026
6pm PST Jan 12, 2026-6pm PST Jan 19, 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