St Austell Rainfall ForecastUnited KingdomSWCornwallSt AustellToday 15 Jul85%Wed 16 Jul85%Thu 17 Jul40%Fri 18 Jul35%Sat 19 Jul40%Sun 20 Jul40%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