St Mary's Rainfall ForecastUnited KingdomSWCornwallSt Mary'sToday 16 Sep10%Tue 17 SepNo RainWed 18 Sep5%Thu 19 Sep5%Fri 20 Sep10%Sat 21 Sep5%Sun 22 Sep10%St Mary's rainfall forecast issued today at 1:38 pm. Next forecast at approx. 3:38 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