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

25°F

-4°C

Humidity 78%
Wind Speed S 17 mph
Barometer 30.12 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 18 Mar 12:35 am CDT
Extended Forecast for

Princeton IL

  • Overnight

    Overnight: Snow, mainly before 4am. Temperature rising to around 26 by 5am. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of around an inch possible.

    Low: 21 °F⇑

    Snow

  • Wednesday

    Wednesday: A chance of flurries before 7am. Mostly sunny, with a high near 42. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 42 °F

    Chance
    Flurries

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 3am. Cloudy, with a low around 33. Calm wind becoming southeast around 5 mph after midnight.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 54. Southeast wind around 5 mph becoming northwest in the afternoon.

    High: 54 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow, mainly before 4am. Temperature rising to around 26 by 5am. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of around an inch possible.
Wednesday
A chance of flurries before 7am. Mostly sunny, with a high near 42. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
A 20 percent chance of rain after 3am. Cloudy, with a low around 33. Calm wind becoming southeast around 5 mph after midnight.
Thursday
Mostly sunny, with a high near 54. Southeast wind around 5 mph becoming northwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 62.
Friday Night
Mostly cloudy, with a low around 42.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Partly sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 30.
Monday
Partly sunny, with a high near 46.
Monday Night
Mostly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.37°N 89.46°W (Elev. 709 ft)
Last Update:
11:46 pm CDT Mar 17, 2026
Forecast Valid:
12am CDT Mar 18, 2026-6pm CDT Mar 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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