St Austell Rainfall ForecastUnited KingdomSWCornwallSt AustellToday 18 Sep10%Fri 19 Sep80%Sat 20 Sep65%Sun 21 Sep65%Mon 22 Sep10%Tue 23 Sep5%Wed 24 Sep5%St Austell rainfall forecast issued today at 7:36 am. Next forecast at approx. 9:36 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