Grass Holm Rainfall ForecastUnited KingdomOSOrkney IslandsGrass HolmToday 25 Jun95%Fri 26 Jun60%Sat 27 Jun55%Sun 28 Jun40%Mon 29 Jun30%Tue 30 Jun10%Grass Holm rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Hill of Dudwick (Aberdeenshire) Radar Rainfall Rainfall AccumulationGet WillyWeather+ to remove ads