Londonderry Rainfall ForecastUnited KingdomNIDerryLondonderryToday 18 Sep80%Fri 19 Sep45%Sat 20 Sep55%Sun 21 Sep50%Mon 22 Sep10%Tue 23 Sep10%Londonderry rainfall forecast issued yesterday 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