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.

Overcast

18°F

-8°C

Humidity 73%
Wind Speed NW 15 G 18 mph
Barometer 30.47 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 31 Jan 9:41 am CST
Extended Forecast for

Princeton IL

  • Today

    Today: Mostly sunny, with a high near 24. Wind chill values as low as zero. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 24 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 6. Wind chill values as low as zero. Northwest wind around 5 mph becoming calm.

    Low: 6 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of snow after noon. Partly sunny, with a high near 26. Wind chill values as low as zero. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 26 °F

    Partly Sunny
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow before midnight. Mostly cloudy, with a low around 18. South wind 5 to 10 mph. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 24. Wind chill values as low as zero. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 6. Wind chill values as low as zero. Northwest wind around 5 mph becoming calm.
Sunday
A 40 percent chance of snow after noon. Partly sunny, with a high near 26. Wind chill values as low as zero. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
A 50 percent chance of snow before midnight. Mostly cloudy, with a low around 18. South wind 5 to 10 mph. New snow accumulation of less than a half inch possible.
Monday
Mostly sunny, with a high near 31.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 29.
Tuesday Night
Partly cloudy, with a low around 11.
Wednesday
Mostly sunny, with a high near 27.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Partly sunny, with a high near 33.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Mostly cloudy, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.37°N 89.46°W (Elev. 709 ft)
Last Update:
9:37 am CST Jan 31, 2026
Forecast Valid:
10am CST Jan 31, 2026-6pm CST Feb 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation