Merthyr Dyfan Rainfall ForecastUnited KingdomWLVale of GlamorganMerthyr DyfanToday 18 Oct95%Sun 19 Oct95%Mon 20 Oct90%Tue 21 Oct45%Wed 22 Oct85%Thu 23 Oct40%Fri 24 Oct30%Merthyr Dyfan rainfall forecast issued today at 7:36 pm. Next forecast at approx. 9:36 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Cobbacombe Cross (Devon) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads