Llantrisant Rainfall ForecastUnited KingdomWLMonmouthshireLlantrisantToday 18 MayNo RainMon 19 May5%Tue 20 May25%Wed 21 May20%Thu 22 May5%Fri 23 May10%Sat 24 May40%Llantrisant rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Clee Hill (Shropshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads