Horsham Rainfall ForecastUnited KingdomSEWest SussexHorshamToday 12 Mar95%Fri 13 Mar10%Sat 14 Mar10%Sun 15 Mar45%Mon 16 Mar20%Tue 17 Mar20%Horsham rainfall forecast issued today at 12:36 am. Next forecast at approx. 2:36 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