Greencastle Rainfall ForecastUnited KingdomNINewry and MourneGreencastleToday 15 Dec15%Tue 16 Dec95%Wed 17 Dec85%Thu 18 Dec50%Fri 19 Dec35%Sat 20 Dec10%Sun 21 Dec5%Greencastle rainfall forecast issued today at 12:39 pm. Next forecast at approx. 2:39 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