Snowdonia National Park Rainfall ForecastUnited KingdomWLGwyneddSnowdonia National ParkToday 21 Sep20%Tue 22 Sep40%Wed 23 Sep65%Thu 24 Sep55%Fri 25 Sep55%Sat 26 Sep35%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 am. Next forecast at approx. 3:09 pm. Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads