Llantrisant Rainfall ForecastUnited KingdomWLIsle of AngleseyLlantrisantToday 29 May20%Fri 30 May50%Sat 31 May15%Sun 1 Jun35%Mon 2 Jun20%Tue 3 Jun40%Llantrisant 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 Dublin RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads