Harefield Rainfall ForecastUnited KingdomSEGreater LondonHarefieldToday 25 Oct55%Sun 26 Oct85%Mon 27 Oct10%Tue 28 Oct10%Wed 29 Oct15%Thu 30 Oct35%Fri 31 Oct35%Harefield rainfall forecast issued today at 1:36 pm. Next forecast at approx. 2:36 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