Knox Rainfall ForecastUnited StatesILKnox CountyKnoxToday 18 Apr50%Sat 19 Apr45%Sun 20 Apr85%Mon 21 Apr95%Tue 22 Apr15%Wed 23 Apr35%Thu 24 Apr35%Knox 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 Quad Cities RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads