St Martin's Rainfall ForecastUnited KingdomSWCornwallSt Martin'sToday 15 Dec30%Tue 16 Dec60%Wed 17 Dec85%Thu 18 Dec85%Fri 19 Dec60%Sat 20 Dec60%Sun 21 Dec30%St Martin's rainfall forecast issued today at 12:39 pm. Next forecast at approx. 2:39 am.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