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

7°F

-14°C

Humidity 85%
Wind Speed Calm
Barometer 30.35 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Last update 1 Feb 5:01 am CST
Extended Forecast for

Princeton IL

  • Today

    Today: Snow likely, mainly after 2pm. Mostly cloudy, with a high near 27. Wind chill values as low as zero. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 27 °F

    Slight Chance
    Snow then
    Snow Likely

  • Tonight

    Tonight: Snow likely, mainly before midnight. Mostly cloudy, with a steady temperature around 21. South wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Snow Likely
    then Slight
    Chance Snow

  • Monday

    Monday: Partly sunny, with a high near 31. West wind 5 to 10 mph.

    High: 31 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 18. North wind around 5 mph.

    Low: 18 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 28.

    High: 28 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

Detailed Forecast

Today
Snow likely, mainly after 2pm. Mostly cloudy, with a high near 27. Wind chill values as low as zero. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely, mainly before midnight. Mostly cloudy, with a steady temperature around 21. South wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 31. West wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 18. North wind around 5 mph.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Partly cloudy, with a low around 10.
Wednesday
Sunny, with a high near 28.
Wednesday Night
Partly cloudy, with a low around 15.
Thursday
Partly sunny, with a high near 37.
Thursday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 29.
Friday
Partly sunny, with a high near 37.
Friday Night
Partly cloudy, with a low around 13.
Saturday
Mostly sunny, with a high near 24.
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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:
3:36 am CST Feb 1, 2026
Forecast Valid:
5am CST Feb 1, 2026-6pm CST Feb 7, 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