St Mary's Rainfall ForecastUnited KingdomSWCornwallSt Mary'sToday 20 Nov65%Fri 21 Nov50%Sat 22 Nov55%Sun 23 Nov40%Mon 24 Nov35%Tue 25 Nov10%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