St Mellion Rainfall ForecastUnited KingdomSWCornwallSt MellionToday 5 Sep45%Sat 6 Sep75%Sun 7 Sep70%Mon 8 Sep40%Tue 9 Sep50%Wed 10 Sep40%St Mellion 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 Cobbacombe Cross (Devon) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads