Ystradgynlais Rainfall ForecastUnited KingdomWLPowysYstradgynlaisToday 2 Jul95%Fri 3 Jul15%Sat 4 Jul20%Sun 5 Jul15%Mon 6 Jul15%Tue 7 Jul10%Ystradgynlais rainfall forecast issued today at 1:37 am. Next forecast at approx. 3:37 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads