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

Snow Squalls from the Upper Midwest to Great Lakes; High Winds in the Northern and Central Plains

An Arctic front will bring widespread snow squalls through Friday from the Upper Midwest to the Ohio Valley. Heavy snow rates and strong winds will lead to near-zero visibility and dangerous travel conditions. High winds will continue across the northern and central High Plains through Friday, with wind gusts above 60 mph likely, leading to hazardous travel conditions. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

31°F

-1°C

Humidity 98%
Wind Speed WSW 0 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 15 Jan 07:52 PM PST
Extended Forecast for

17 Miles SSE Agness OR

Air Stagnation Advisory January 15, 08:37pm until January 20, 10:00am
Freezing Fog Advisory January 15, 08:37pm until January 16, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 15, 08:37pm until January 20, 10:00am
    Freezing Fog Advisory January 15, 08:37pm until January 16, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 51 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 63. North northeast wind 6 to 9 mph.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 46. East southeast wind around 8 mph.

    Low: 46 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 59. East southeast wind around 7 mph becoming southwest in the afternoon.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43. Southeast wind around 6 mph.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 58.

    High: 58 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 51. East wind 10 to 15 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 63. North northeast wind 6 to 9 mph.
Friday Night
Clear, with a low around 46. East southeast wind around 8 mph.
Saturday
Sunny, with a high near 59. East southeast wind around 7 mph becoming southwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 43. Southeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 40.
M.L.King Day
Sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 52.
Wednesday Night
A slight chance of rain. Snow level 4900 feet. Mostly cloudy, with a low around 41.
Thursday
A chance of rain. Snow level 4500 feet. Partly sunny, with a high near 47.
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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:
3:41 pm PST Jan 15, 2026
Forecast Valid:
8pm PST Jan 15, 2026-6pm PST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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