Pen y Gloyn Rainfall ForecastUnited KingdomWLCeredigionPen y GloynToday 31 Dec20%Thu 1 Jan75%Fri 2 Jan40%Sat 3 Jan35%Sun 4 Jan40%Mon 5 Jan35%Pen y Gloyn rainfall forecast issued today at 12:36 am. Next forecast at approx. 2:36 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