Ystradgynlais Rainfall ForecastUnited KingdomWLPowysYstradgynlaisToday 3 Jul5%Fri 4 Jul80%Sat 5 Jul85%Sun 6 Jul50%Mon 7 Jul15%Tue 8 Jul5%Wed 9 Jul5%Ystradgynlais rainfall forecast issued today at 7:38 am. Next forecast at approx. 9:38 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