Groomsport Rainfall ForecastUnited KingdomNINorth DownGroomsportToday 19 Sep50%Sat 20 Sep85%Sun 21 Sep35%Mon 22 Sep5%Tue 23 Sep5%Wed 24 Sep10%Groomsport rainfall forecast issued yesterday at 7:38 pm. Next forecast at approx. 9:38 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