River Tamar - Pentillie Castle Rainfall ForecastUnited KingdomSWCornwallRiver Tamar - Pentillie CastleToday 3 May10%Sat 4 May15%Sun 5 May30%Mon 6 May35%Tue 7 May5%Wed 8 May10%River Tamar - Pentillie Castle rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Cobbacombe Cross (Devon) RadarNational SatelliteNational SynopticGet an account to remove ads