Loch Grannoch Rainfall ForecastUnited KingdomDGDumfries and GallowayLoch GrannochToday 17 Feb5%Wed 18 Feb5%Thu 19 Feb80%Fri 20 Feb85%Sat 21 Feb75%Sun 22 Feb80%Loch Grannoch 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 Holehead (Stirling) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads