Groomsport Rainfall ForecastUnited KingdomNINorth DownGroomsportToday 15 Jul60%Wed 16 Jul5%Thu 17 Jul60%Fri 18 Jul10%Sat 19 Jul55%Sun 20 Jul40%Mon 21 Jul30%Groomsport rainfall forecast issued today at 7:37 pm. Next forecast at approx. 9:37 am.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