St Marys (Scapa Flow) Rainfall ForecastUnited KingdomOSOrkney IslandsSt Marys (Scapa Flow)Today 6 Sep5%Sun 7 Sep40%Mon 8 Sep10%Tue 9 Sep30%Wed 10 Sep55%Thu 11 Sep40%St Marys (Scapa Flow) rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Hill of Dudwick (Aberdeenshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads