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.

Partly Cloudy and Breezy

80°F

27°C

Humidity 45%
Wind Speed SW 24 G 31 mph
Barometer 29.86 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 12 Apr 2:35 pm CDT
Extended Forecast for

Princeton IL

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 78. Breezy, with a southwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 11pm. Low around 61. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 61 °F

    Showers and
    Breezy then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 78. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 78 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 64 °F

    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 78. Breezy, with a southwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms, mainly before 11pm. Low around 61. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Monday
Mostly cloudy, with a high near 78. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 58.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 83.
Friday Night
Showers and possibly a thunderstorm. Low around 56. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.37°N 89.46°W (Elev. 709 ft)
Last Update:
1:26 pm CDT Apr 12, 2026
Forecast Valid:
2pm CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation