St Day Rainfall ForecastUnited KingdomSWCornwallSt DayToday 27 Jan90%Wed 28 Jan90%Thu 29 Jan85%Fri 30 Jan60%Sat 31 Jan50%Sun 1 Feb30%Mon 2 Feb55%St Day rainfall forecast issued today at 12:36 pm. Next forecast at approx. 2:36 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