The Collon Rainfall ForecastUnited KingdomNIDerryThe CollonToday 16 Nov10%Mon 17 Nov75%Tue 18 Nov55%Wed 19 Nov65%Thu 20 Nov35%Fri 21 Nov55%The Collon rainfall forecast issued today at 6:36 am. Next forecast at approx. 8:36 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