LLwyn-on Rainfall ForecastUnited KingdomWLMerthyr TydfilLLwyn-onToday 9 Sep20%Thu 10 Sep95%Fri 11 Sep40%Sat 12 Sep90%Sun 13 Sep45%Mon 14 Sep60%Tue 15 Sep55%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 7:09 am. Next forecast at approx. 9:09 pm. Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads