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

52°F

11°C

Humidity 73%
Wind Speed S 7 mph
Barometer 29.92 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 30 Mar 6:15 am CDT
Extended Forecast for

Princeton IL

  • Today

    Today: Sunny, with a high near 81. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Isolated showers and thunderstorms after midnight. Increasing clouds, with a low around 62. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 62 °F

    Partly Cloudy
    then Isolated
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 79. Breezy, with a south wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.

    High: 79 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 41. Northwest wind around 15 mph becoming northeast after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, mainly after 1pm. Cloudy, with a high near 48. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 48 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers. Low around 40. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 40 °F

    Showers

  • Thursday

    Thursday: Showers. High near 62. Chance of precipitation is 90%.

    High: 62 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.

    Low: 43 °F

    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 81. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Isolated showers and thunderstorms after midnight. Increasing clouds, with a low around 62. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 79. Breezy, with a south wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 41. Northwest wind around 15 mph becoming northeast after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers likely, mainly after 1pm. Cloudy, with a high near 48. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Showers. Low around 40. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Thursday
Showers. High near 62. Chance of precipitation is 90%.
Thursday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 65.
Friday Night
Showers likely. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Saturday
Showers likely. Mostly cloudy, with a high near 63. Breezy. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 52. Breezy.
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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:
3:22 am CDT Mar 30, 2026
Forecast Valid:
6am CDT Mar 30, 2026-6pm CDT Apr 5, 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