St Austell Rainfall ForecastUnited KingdomSWCornwallSt AustellToday 3 Sep75%Thu 4 Sep55%Fri 5 Sep25%Sat 6 Sep60%Sun 7 Sep65%Mon 8 Sep40%St Austell 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