Derrick Lake Rainfall ForecastUnited StatesWAKing CountyDerrick LakeToday 16 AprNo RainThu 17 AprNo RainFri 18 Apr5%Sat 19 Apr30%Sun 20 Apr40%Mon 21 Apr30%Tue 22 Apr15%Derrick Lake rainfall forecast issued today at 12:04 am. Next forecast at approx. 2:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Seattle RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads