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.

Light Rain

64°F

18°C

Humidity 94%
Wind Speed SW 3 mph
Barometer 29.99 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 19 Jun 9:50 pm CDT
Extended Forecast for

Princeton IL

  • Tonight

    Tonight: A 40 percent chance of showers, mainly before 3am. Partly cloudy, with a low around 59. West wind around 5 mph.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 79. West wind 5 to 10 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. Northwest wind around 5 mph becoming calm.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall. High near 72. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 72 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 57. Breezy. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    Showers and
    Breezy

  • Monday

    Monday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
A 40 percent chance of showers, mainly before 3am. Partly cloudy, with a low around 59. West wind around 5 mph.
Saturday
Sunny, with a high near 79. West wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 58. Northwest wind around 5 mph becoming calm.
Sunday
Showers likely, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall. High near 72. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and possibly a thunderstorm. Low around 57. Breezy. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Partly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 58.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.4°N 89.46°W (Elev. 699 ft)
Last Update:
8:01 pm CDT Jun 19, 2026
Forecast Valid:
10pm CDT Jun 19, 2026-6pm CDT Jun 26, 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