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 71%
Wind Speed Calm
Barometer 30.66 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 28 Mar 8:15 am CDT
Extended Forecast for

Princeton IL

  • Today

    Today: Sunny, with a high near 52. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 52 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 38. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 63. South wind around 15 mph, with gusts as high as 25 mph.

    High: 63 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 50. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 63. Breezy.

    Low: 63 °F

    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: A chance of rain, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. Breezy. Chance of precipitation is 70%.

    High: 78 °F

    Breezy.
    Chance Rain
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

  • Wednesday

    Wednesday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 52. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Tonight
Partly cloudy, with a low around 38. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 63. South wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 50. South wind around 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 80.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 63. Breezy.
Tuesday
A chance of rain, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. Breezy. Chance of precipitation is 70%.
Tuesday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Wednesday
Partly sunny, with a high near 51.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
A 40 percent chance of rain. Partly sunny, with a high near 50.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 62.
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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:
5:47 am CDT Mar 28, 2026
Forecast Valid:
8am CDT Mar 28, 2026-6pm CDT Apr 3, 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