Grenham Bay Rainfall ForecastUnited KingdomSEKentGrenham BayToday 2 Jul90%Thu 3 JulNo RainFri 4 Jul5%Sat 5 Jul20%Sun 6 Jul30%Mon 7 Jul40%Grenham Bay rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Thurnham (Kent) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads