Hammer Rainfall ForecastUnited KingdomSEWest SussexHammerToday 11 Jan100%Mon 12 Jan35%Tue 13 Jan85%Wed 14 Jan50%Thu 15 Jan65%Fri 16 Jan35%Sat 17 Jan30%Hammer rainfall forecast issued today at 12:39 pm. Next forecast at approx. 2:39 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