Groomsport Rainfall ForecastUnited KingdomNINorth DownGroomsportToday 5 Oct60%Tue 6 Oct50%Wed 7 Oct35%Thu 8 Oct85%Fri 9 Oct55%Sat 10 Oct10%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Groomsport rainfall forecast issued today at 1:09 am. Next forecast at approx. 3:09 pm. Rainfall Rainfall AccumulationCastor Bay (Lurgan) RadarGet WillyWeather+ to remove ads