Gurnos Rainfall ForecastUnited KingdomWLMerthyr TydfilGurnosToday 2 Jan25%Sat 3 Jan10%Sun 4 Jan10%Mon 5 Jan15%Tue 6 Jan45%Wed 7 Jan15%Gurnos rainfall forecast issued yesterday at 6:36 pm. Next forecast at approx. 8:36 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