Heol-ddu Rainfall ForecastUnited KingdomWLCarmarthenshireHeol-dduToday 19 Jul85%Sun 20 Jul85%Mon 21 Jul60%Tue 22 Jul40%Wed 23 Jul45%Thu 24 Jul20%Fri 25 Jul10%Heol-ddu rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 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