Potomac River - Gambo Creek Entrance Rainfall ForecastUnited StatesVAKing George CountyPotomac River - Gambo Creek EntranceToday 19 Apr5%Sun 20 Apr5%Mon 21 Apr10%Tue 22 Apr35%Wed 23 Apr25%Thu 24 Apr15%Fri 25 Apr30%Potomac River - Gambo Creek Entrance rainfall forecast issued today at 5:04 am. Next forecast at approx. 7:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Sterling RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads