Grass Holm Rainfall ForecastUnited KingdomOSOrkney IslandsGrass HolmToday 12 Aug45%Thu 13 Aug80%Fri 14 Aug20%Sat 15 Aug30%Sun 16 Aug15%Mon 17 Aug55%Tue 18 Aug45%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Grass Holm rainfall forecast issued today at 7:10 am. Next forecast at approx. 9:10 pm. Rainfall Rainfall AccumulationHill of Dudwick (Aberdeenshire) RadarGet WillyWeather+ to remove ads