South Marston Rainfall ForecastUnited KingdomSWWiltshireSouth MarstonToday 31 May15%Mon 1 Jun90%Tue 2 Jun70%Wed 3 Jun40%Thu 4 Jun65%Fri 5 Jun40%Sat 6 Jun10%South Marston rainfall forecast issued today at 7:36 am. Next forecast at approx. 9:36 pm.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