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

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fog

32°F

0°C

Humidity 93%
Wind Speed SW 3 mph
Barometer 29.96 in
Dewpoint 30°F (-1°C)
Visibility 0.15 mi
Last update 15 Feb 7:21 am CST
Extended Forecast for

Princeton IL

Dense Fog Advisory until February 15, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until February 15, 10:00am

    NOW until 10:00am Sun

    Dense Fog Advisory

  • Today

    High: 60 °F

    Patchy Dense
    Fog then
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 37. West wind around 5 mph becoming south after midnight.

    Low: 37 °F

    Increasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 41. South wind around 5 mph.

    Low: 41 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain after midnight. Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Sunny, with a high near 65. Breezy.

    High: 65 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Today
Patchy dense fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 37. West wind around 5 mph becoming south after midnight.
Washington's Birthday
Mostly sunny, with a high near 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Increasing clouds, with a low around 41. South wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 60.
Tuesday Night
A 40 percent chance of rain after midnight. Partly cloudy, with a low around 53.
Wednesday
Sunny, with a high near 65. Breezy.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
A 30 percent chance of rain after noon. Partly sunny, with a high near 58.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 31.
Friday
A 30 percent chance of snow. Partly sunny, with a high near 42.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.37°N 89.46°W (Elev. 709 ft)
Last Update:
7:37 am CST Feb 15, 2026
Forecast Valid:
7am CST Feb 15, 2026-6pm CST Feb 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