Grenham Bay Rainfall ForecastUnited KingdomSEKentGrenham BayToday 10 Sep20%Fri 11 Sep10%Sat 12 Sep35%Sun 13 Sep35%Mon 14 Sep5%Tue 15 Sep5%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Grenham Bay rainfall forecast issued today at 1:08 am. Next forecast at approx. 3:08 pm. Rainfall Rainfall AccumulationThurnham (Kent) RadarGet WillyWeather+ to remove ads