Cumnor Rainfall ForecastUnited KingdomSEOxfordshireCumnorToday 4 Dec85%Thu 5 Dec65%Fri 6 Dec80%Sat 7 Dec45%Sun 8 Dec10%Mon 9 Dec15%Cumnor rainfall forecast issued today at 6:38 am. Next forecast at approx. 8:38 pm.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