Grobister Rainfall ForecastUnited KingdomOSOrkney IslandsGrobisterToday 18 Dec65%Thu 19 Dec85%Fri 20 Dec90%Sat 21 Dec70%Sun 22 Dec40%Mon 23 Dec55%Grobister rainfall forecast issued today at 12:37 am. Next forecast at approx. 2:37 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