Harefield Rainfall ForecastUnited KingdomSEGreater LondonHarefieldToday 27 Mar95%Sat 28 Mar45%Sun 29 Mar50%Mon 30 Mar10%Tue 31 Mar10%Wed 1 Apr10%Thu 2 Apr10%Harefield rainfall forecast issued today at 6:36 am. Next forecast at approx. 8:36 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