Castle Sween Rainfall ForecastUnited KingdomSTArgyll and ButeCastle SweenToday 21 Feb90%Sun 22 Feb80%Mon 23 Feb90%Tue 24 Feb80%Wed 25 Feb55%Thu 26 Feb80%Fri 27 Feb60%Castle Sween rainfall forecast issued today at 6:35 pm. Next forecast at approx. 8:35 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Holehead (Stirling) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads