Harrisburg Reservoir Rainfall ForecastUnited StatesILSaline CountyHarrisburg ReservoirToday 18 Apr10%Sat 19 Apr75%Sun 20 Apr70%Mon 21 Apr80%Tue 22 AprNo RainWed 23 Apr15%Thu 24 Apr50%Harrisburg Reservoir 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 Paducah RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads