Bryn-mawr Rainfall ForecastUnited KingdomWLGwyneddBryn-mawrToday 16 Jul55%Thu 17 Jul55%Fri 18 Jul40%Sat 19 Jul50%Sun 20 Jul40%Mon 21 Jul35%Bryn-mawr rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 pm.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