Harleston Rainfall ForecastUnited KingdomEENorfolkHarlestonToday 17 Jul5%Fri 18 Jul50%Sat 19 Jul45%Sun 20 Jul40%Mon 21 Jul65%Tue 22 Jul30%Harleston rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 pm.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