Delaware River - Port Penn Rainfall ForecastUnited StatesDENew Castle CountyDelaware River - Port PennToday 19 Apr5%Sun 20 Apr5%Mon 21 Apr10%Tue 22 Apr35%Wed 23 Apr5%Thu 24 Apr5%Fri 25 Apr25%Delaware River - Port Penn rainfall forecast issued today at 4:04 am. Next forecast at approx. 6:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Dover Air Force Base RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads