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

79°F

26°C

Humidity 48%
Wind Speed SW 14 G 22 mph
Barometer 29.77 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 30 Mar 9:18 pm CDT
Extended Forecast for

Princeton IL

Severe T-storm Watch until March 31, 03:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until March 31, 03:00am

    NOW until 3:00am Tue

    Severe T-storm Watch

  • Tonight

    Low: 63 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 78. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 78 °F

    Breezy.
    Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 40. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 40 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 48. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 48 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers, with thunderstorms also possible after 10pm. Low around 41. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 41 °F

    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 10am. High near 70. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 70 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely before 1am. Mostly cloudy, with a low around 46. Breezy. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 63. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 78. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 40. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 48. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers, with thunderstorms also possible after 10pm. Low around 41. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday
Showers, with thunderstorms also possible after 10am. High near 70. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Showers likely before 1am. Mostly cloudy, with a low around 46. Breezy. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 70.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Saturday
Showers likely. Mostly cloudy, with a high near 65. Breezy. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 32.
Monday
Sunny, with a high near 59.
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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:
9:26 pm CDT Mar 30, 2026
Forecast Valid:
9pm CDT Mar 30, 2026-6pm CDT Apr 6, 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