St Mary's Rainfall ForecastUnited KingdomSWCornwallSt Mary'sToday 19 Jan95%Tue 20 Jan95%Wed 21 Jan50%Thu 22 Jan60%Fri 23 Jan35%Sat 24 Jan35%St Mary's rainfall forecast issued today at 12:36 am. Next forecast at approx. 2:36 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