Heolgerrig Rainfall ForecastUnited KingdomWLMerthyr TydfilHeolgerrigToday 22 Feb85%Mon 23 Feb90%Tue 24 Feb25%Wed 25 Feb55%Thu 26 Feb85%Fri 27 Feb55%Sat 28 Feb70%Heolgerrig rainfall forecast issued today at 12:35 pm. Next forecast at approx. 2:35 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