Blackfen Rainfall ForecastUnited KingdomSEGreater LondonBlackfenToday 16 Feb70%Tue 17 Feb5%Wed 18 Feb75%Thu 19 Feb45%Fri 20 Feb60%Sat 21 Feb15%Sun 22 Feb20%Blackfen rainfall forecast issued today at 12:37 pm. Next forecast at approx. 2:37 am.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