Merthyr Tydfil Rainfall ForecastUnited KingdomWLMerthyr TydfilMerthyr TydfilToday 21 Nov75%Fri 22 Nov95%Sat 23 Nov100%Sun 24 Nov80%Mon 25 Nov35%Tue 26 Nov10%Wed 27 Nov10%Merthyr Tydfil rainfall forecast issued today at 12:40 pm. Next forecast at approx. 2:40 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