Calshot Castle Rainfall ForecastUnited KingdomSEHampshireCalshot CastleToday 9 May10%Sun 10 May50%Mon 11 May5%Tue 12 May15%Wed 13 May40%Thu 14 May45%Calshot Castle rainfall forecast issued yesterday at 7:38 pm. Next forecast at approx. 9:38 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