Londonderry Rainfall ForecastUnited KingdomNIDerryLondonderryToday 13 Feb15%Sat 14 Feb90%Sun 15 Feb40%Mon 16 Feb35%Tue 17 Feb40%Wed 18 Feb15%Londonderry rainfall forecast issued today at 12:36 am. Next forecast at approx. 2:36 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