Calshot Castle Rainfall ForecastUnited KingdomSEHampshireCalshot CastleToday 19 Apr95%Sun 20 Apr40%Mon 21 Apr15%Tue 22 Apr40%Wed 23 Apr10%Thu 24 Apr10%Fri 25 Apr15%Calshot Castle rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 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