Grimness Rainfall ForecastUnited KingdomOSOrkney IslandsGrimnessToday 20 Apr85%Sun 21 Apr50%Mon 22 Apr25%Tue 23 Apr10%Wed 24 Apr5%Thu 25 Apr10%Fri 26 Apr10%Grimness rainfall forecast issued today at 1:43 pm. Next forecast at approx. 3:43 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 an account to remove ads