National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Overcast

75°F

24°C

Humidity 88%
Wind Speed E 5 mph
Barometer 30.08 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 14 Aug 8:15 pm CDT
Extended Forecast for

Princeton IL

Flood Watch August 14, 08:36pm until August 15, 10:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 14, 08:36pm until August 15, 10:00am

    NOW until 10:00am Sat

    Flood Watch

  • Tonight

    Low: 71 °F

    Chance
    T-storms then
    Heavy Rain

  • Saturday

    Saturday: Showers and thunderstorms, mainly before noon. Some of the storms could produce heavy rainfall. High near 88. Heat index values as high as 102. Southeast wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 88 °F

    Heavy Rain
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Northwest wind around 5 mph becoming southwest in the evening. Chance of precipitation is 40%.

    Low: 73 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 84. Northwest wind 5 to 10 mph. Chance of precipitation is 40%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of thunderstorms before 7pm. Mostly clear, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall. Low around 71. East wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday
Showers and thunderstorms, mainly before noon. Some of the storms could produce heavy rainfall. High near 88. Heat index values as high as 102. Southeast wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Northwest wind around 5 mph becoming southwest in the evening. Chance of precipitation is 40%.
Sunday
A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 84. Northwest wind 5 to 10 mph. Chance of precipitation is 40%.
Sunday Night
A chance of thunderstorms before 7pm. Mostly clear, with a low around 64. Chance of precipitation is 30%.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 77.
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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:
8:26 pm CDT Aug 14, 2026
Forecast Valid:
8pm CDT Aug 14, 2026-6pm CDT Aug 21, 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