Old Princeton Rainfall ForecastUnited StatesILCass CountyOld PrincetonToday 18 Apr50%Sat 19 Apr85%Sun 20 Apr90%Mon 21 Apr95%Tue 22 Apr10%Wed 23 Apr25%Thu 24 Apr40%Old Princeton rainfall forecast issued today at 8:05 pm. Next forecast at approx. 10:05 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Lincoln RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads