Grafham Water Rainfall ForecastUnited KingdomEECambridgeshireGrafham WaterToday 29 May45%Sat 30 May5%Sun 31 May5%Mon 1 Jun55%Tue 2 Jun60%Wed 3 Jun40%Thu 4 Jun55%Grafham Water rainfall forecast issued today at 1:36 pm. Next forecast at approx. 3:36 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Chenies (Hertfordshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads