Grimness Rainfall ForecastUnited KingdomOSOrkney IslandsGrimnessToday 7 Jan85%Thu 8 Jan30%Fri 9 Jan50%Sat 10 Jan30%Sun 11 Jan15%Mon 12 Jan15%Tue 13 Jan40%Grimness rainfall forecast issued today at 12:37 pm. Next forecast at approx. 2:37 am.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