National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Lake-Effect Snow through Friday; Strong Winds in the Northern and Central Plains

A clipper-like system will drop down from Canada on Thursday, bringing wintry weather from the Upper Midwest to the Great Lakes through Friday. This system is expected to bring strong northerly winds to much of the northern and central High Plains Thursday afternoon through Friday, with gusts up to 60 mph expected. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

30°F

-1°C

Humidity 99%
Wind Speed WSW 1 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 14 Jan 11:52 PM PST
Extended Forecast for

17 Miles SSE Agness OR

Air Stagnation Advisory January 15, 12:08am until January 20, 10:00am
Freezing Fog Advisory until January 15, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 15, 12:08am until January 20, 10:00am
    Freezing Fog Advisory until January 15, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 55 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 66. East northeast wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 51. East wind around 8 mph.

    Low: 51 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 63. East southeast wind around 6 mph becoming west southwest in the afternoon.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 50. East wind around 9 mph.

    Low: 50 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 47.

    Low: 47 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a low around 55. East northeast wind around 16 mph, with gusts as high as 24 mph.
Thursday
Sunny, with a high near 66. East northeast wind 7 to 14 mph, with gusts as high as 21 mph.
Thursday Night
Clear, with a low around 51. East wind around 8 mph.
Friday
Sunny, with a high near 63. East southeast wind around 6 mph becoming west southwest in the afternoon.
Friday Night
Clear, with a low around 50. East wind around 9 mph.
Saturday
Sunny, with a high near 62.
Saturday Night
Clear, with a low around 47.
Sunday
Sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 44.
M.L.King Day
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
Last Update:
9:41 pm PST Jan 14, 2026
Forecast Valid:
12am PST Jan 15, 2026-6pm PST Jan 21, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation