Pen-y-bryn Rainfall ForecastUnited KingdomWLGwyneddPen-y-brynToday 14 Aug70%Fri 15 AugNo RainSat 16 AugNo RainSun 17 Aug5%Mon 18 Aug5%Tue 19 Aug10%Pen-y-bryn 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 Crug-y-Gorllwyn (Carmarthenshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads