St Martin (Cornwall) Rainfall ForecastUnited KingdomSWCornwallSt Martin (Cornwall)Today 29 Mar95%Mon 30 Mar10%Tue 31 Mar20%Wed 1 Apr20%Thu 2 Apr40%Fri 3 Apr40%Sat 4 Apr45%St Martin (Cornwall) rainfall forecast issued today at 1:39 pm. Next forecast at approx. 3:39 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