Lake Sylvia State Park Rainfall ForecastUnited StatesWAGrays Harbor CountyLake Sylvia State ParkToday 19 Apr20%Sun 20 Apr70%Mon 21 Apr15%Tue 22 AprNo RainWed 23 Apr5%Thu 24 Apr25%Fri 25 Apr40%Lake Sylvia State Park rainfall forecast issued today at 3:04 am. Next forecast at approx. 5:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Langley Hill RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads