Glan-y-llyn Rainfall ForecastUnited KingdomWLRhondda Cynon TaffGlan-y-llynToday 16 MayNo RainSat 17 May5%Sun 18 MayNo RainMon 19 May5%Tue 20 May10%Wed 21 May5%Glan-y-llyn rainfall forecast issued today at 1:37 am. Next forecast at approx. 3:37 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Cobbacombe Cross (Devon) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads