Castle Rock Rainfall ForecastUnited StatesCODouglas CountyCastle RockToday 13 Apr40%Mon 14 Apr70%Tue 15 Apr20%Wed 16 Apr30%Thu 17 Apr35%Fri 18 Apr55%Sat 19 Apr45%Castle Rock rainfall forecast issued today at 6:04 am. Next forecast at approx. 8:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Denver RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads