Castledawson Rainfall ForecastUnited KingdomNIMagherafeltCastledawsonToday 16 Dec95%Wed 17 Dec60%Thu 18 Dec80%Fri 19 Dec50%Sat 20 Dec45%Sun 21 Dec45%Castledawson rainfall forecast issued today at 6:36 am. Next forecast at approx. 8:36 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