Troedyrhiw Rainfall ForecastUnited KingdomWLMerthyr TydfilTroedyrhiwToday 18 Sep50%Fri 19 Sep35%Sat 20 Sep65%Sun 21 Sep20%Mon 22 Sep10%Tue 23 Sep5%Wed 24 Sep10%Troedyrhiw rainfall forecast issued today at 1:37 pm. Next forecast at approx. 3:37 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