Colusa Rainfall ForecastUnited StatesILHancock CountyColusaToday 18 Apr50%Sat 19 Apr40%Sun 20 Apr90%Mon 21 Apr90%Tue 22 Apr20%Wed 23 Apr35%Thu 24 Apr40%Colusa rainfall forecast issued today at 9:04 pm. Next forecast at approx. 11:04 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