Portstewart Rainfall ForecastUnited KingdomNIColerainePortstewartToday 26 Nov80%Thu 27 Nov70%Fri 28 Nov35%Sat 29 Nov10%Sun 30 Nov50%Mon 1 Dec50%Portstewart 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