River Foyle - Lisahally Rainfall ForecastUnited KingdomNIDerryRiver Foyle - LisahallyToday 17 May85%Mon 18 May85%Tue 19 May70%Wed 20 May40%Thu 21 May40%Fri 22 May15%River Foyle - Lisahally rainfall forecast issued yesterday at 7:36 pm. Next forecast at approx. 9:36 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