St Winnow Rainfall ForecastUnited KingdomSWCornwallSt WinnowToday 16 Feb85%Tue 17 Feb70%Wed 18 Feb90%Thu 19 Feb10%Fri 20 Feb80%Sat 21 Feb50%Sun 22 Feb50%St Winnow rainfall forecast issued today at 6:36 am. Next forecast at approx. 8:36 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