Pen-twyn Rainfall ForecastUnited KingdomWLTorfaenPen-twynToday 31 Dec10%Thu 1 Jan35%Fri 2 Jan10%Sat 3 Jan5%Sun 4 Jan5%Mon 5 Jan10%Pen-twyn rainfall forecast issued today at 6:35 am. Next forecast at approx. 8:35 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Clee Hill (Shropshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads