Snowdonia National Park Rainfall ForecastUnited KingdomWLGwyneddSnowdonia National ParkToday 11 Aug5%Wed 12 AugNo RainThu 13 Aug25%Fri 14 Aug20%Sat 15 Aug5%Sun 16 Aug25%Mon 17 Aug20%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Snowdonia National Park rainfall forecast issued today at 1:09 pm. Next forecast at approx. 3:09 am. Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads