Calshot Castle Rainfall ForecastUnited KingdomSEHampshireCalshot CastleToday 30 Jan90%Fri 31 Jan70%Sat 1 Feb10%Sun 2 Feb15%Mon 3 Feb35%Tue 4 Feb45%Calshot Castle rainfall forecast issued today at 12:38 am. Next forecast at approx. 2:38 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