Llanystumdwy Rainfall ForecastUnited KingdomWLGwyneddLlanystumdwyToday 17 Jul5%Sat 18 Jul5%Sun 19 JulNo RainMon 20 Jul10%Tue 21 Jul15%Wed 22 Jul20%Thu 23 Jul10%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Llanystumdwy rainfall forecast issued today at 9:50 pm. Next forecast at approx. . Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads