Merthyr Tydfil Rainfall ForecastUnited KingdomWLMerthyr TydfilMerthyr TydfilToday 27 Jun85%Sun 28 Jun85%Mon 29 Jun15%Tue 30 Jun40%Wed 1 Jul30%Thu 2 Jul25%Fri 3 Jul5%Merthyr Tydfil rainfall forecast issued today at 1:36 pm. Next forecast at approx. 3:36 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads