St Decumans Rainfall ForecastUnited KingdomSWSomersetSt DecumansToday 5 Jan15%Tue 6 Jan55%Wed 7 Jan15%Thu 8 Jan80%Fri 9 Jan25%Sat 10 Jan75%Sun 11 Jan40%St Decumans rainfall forecast issued today at 12:38 pm. Next forecast at approx. 2:38 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Cobbacombe Cross (Devon) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads