St Mary's Rainfall ForecastUnited KingdomSWCornwallSt Mary'sToday 21 Oct15%Wed 22 Oct85%Thu 23 Oct40%Fri 24 Oct35%Sat 25 Oct15%Sun 26 Oct30%St Mary's rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 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