Harnham Rainfall ForecastUnited KingdomSWWiltshireHarnhamToday 3 Jun95%Thu 4 Jun85%Fri 5 Jun55%Sat 6 Jun85%Sun 7 Jun20%Mon 8 Jun45%Harnham rainfall forecast issued yesterday at 7:36 pm. Next forecast at approx. 9:36 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads