Flannan Isles Rainfall ForecastUnited KingdomHEWestern IslesFlannan IslesToday 17 May25%Mon 18 May25%Tue 19 May85%Wed 20 May45%Thu 21 May85%Fri 22 May80%Sat 23 May50%Flannan Isles rainfall forecast issued today at 7:36 am. Next forecast at approx. 9:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Druim a'Starraig (Isle of Lewis) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads