Penzance Harbour Rainfall ForecastUnited KingdomSWCornwallPenzance HarbourToday 6 Mar5%Sat 7 Mar10%Sun 8 Mar20%Mon 9 Mar15%Tue 10 Mar50%Wed 11 Mar20%Penzance Harbour rainfall forecast issued today at 12:36 am. Next forecast at approx. 2:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Predannack (Cornwall) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads