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.

Fair

30°F

-1°C

Humidity 44%
Wind Speed W 5 mph
Barometer 29.81 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 25 Feb 7:10 pm CST
Extended Forecast for

Princeton IL

  • Tonight

    Tonight: A slight chance of snow between 9pm and 1am. Mostly cloudy, with a low around 21. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 21 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 47. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. Southwest wind around 5 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 64 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of snow after noon. The snow could be heavy at times. Mostly cloudy, with a high near 33.

    High: 33 °F

    Mostly Cloudy
    then Heavy
    Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow

Detailed Forecast

Tonight
A slight chance of snow between 9pm and 1am. Mostly cloudy, with a low around 21. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 47. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 30. Southwest wind around 5 mph.
Friday
Sunny, with a high near 64. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 29.
Saturday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
A 40 percent chance of snow after noon. The snow could be heavy at times. Mostly cloudy, with a high near 33.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 35.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 20.
Tuesday
A 30 percent chance of rain. Partly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Sunny, with a high near 45.
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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:
7:22 pm CST Feb 25, 2026
Forecast Valid:
7pm CST Feb 25, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation