LLwyn-on Rainfall ForecastUnited KingdomWLMerthyr TydfilLLwyn-onToday 24 Nov95%Mon 25 Nov55%Tue 26 Nov50%Wed 27 Nov40%Thu 28 Nov15%Fri 29 Nov75%LLwyn-on rainfall forecast issued today at 6:38 am. Next forecast at approx. 8:38 pm.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