Pen y Gloyn Rainfall ForecastUnited KingdomWLCeredigionPen y GloynToday 17 May85%Mon 18 May90%Tue 19 May55%Wed 20 May35%Thu 21 May35%Fri 22 May35%Pen y Gloyn rainfall forecast issued yesterday at 7:36 pm. Next forecast at approx. 9:36 am.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