St Allen Rainfall ForecastUnited KingdomSWCornwallSt AllenToday 28 Dec10%Mon 29 Dec10%Tue 30 Dec5%Wed 31 Dec15%Thu 1 Jan15%Fri 2 Jan15%Sat 3 Jan15%St Allen rainfall forecast issued today at 6:36 pm. Next forecast at approx. 8:36 am.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