Castlewellan Rainfall ForecastUnited KingdomNIDownCastlewellanToday 18 Sep85%Fri 19 Sep10%Sat 20 Sep85%Sun 21 Sep40%Mon 22 Sep15%Tue 23 Sep10%Wed 24 Sep10%Castlewellan rainfall forecast issued today at 7:36 am. Next forecast at approx. 9:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Castor Bay (Lurgan) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads