Potomac River - Coan River Entrance Rainfall ForecastUnited StatesVANorthumberland CountyPotomac River - Coan River EntranceToday 19 Apr5%Sun 20 Apr5%Mon 21 Apr10%Tue 22 Apr40%Wed 23 Apr25%Thu 24 Apr15%Fri 25 Apr25%Potomac River - Coan River Entrance rainfall forecast issued today at 7:04 am. Next forecast at approx. 9:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Wakefield RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads