Gurnos Rainfall ForecastUnited KingdomWLMerthyr TydfilGurnosToday 2 Nov95%Mon 3 Nov90%Tue 4 Nov90%Wed 5 Nov85%Thu 6 Nov45%Fri 7 Nov80%Sat 8 Nov25%Gurnos rainfall forecast issued today at 12:36 pm. Next forecast at approx. 2:36 am.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