Portstewart Rainfall ForecastUnited KingdomNIColerainePortstewartToday 4 Jun85%Fri 5 Jun85%Sat 6 Jun85%Sun 7 Jun65%Mon 8 Jun55%Tue 9 Jun45%Wed 10 Jun45%Portstewart rainfall forecast issued today 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