Chehalis River - Mox Chuck Slough Entrance Rainfall ForecastUnited StatesWAGrays Harbor CountyChehalis River - Mox Chuck Slough EntranceToday 16 AprNo RainThu 17 AprNo RainFri 18 Apr5%Sat 19 Apr15%Sun 20 Apr35%Mon 21 Apr20%Tue 22 Apr10%Chehalis River - Mox Chuck Slough Entrance 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