LLwyn-on Rainfall ForecastUnited KingdomWLMerthyr TydfilLLwyn-onToday 23 Jul5%Fri 24 Jul5%Sat 25 Jul50%Sun 26 Jul50%Mon 27 Jul20%Tue 28 Jul35%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time LLwyn-on rainfall forecast issued today at 4:55 am. Next forecast at approx. . Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads