Mountain Ash Rainfall ForecastUnited KingdomWLRhondda Cynon TaffMountain AshToday 7 Sep95%Tue 8 Sep40%Wed 9 Sep10%Thu 10 Sep50%Fri 11 Sep10%Sat 12 Sep45%Sun 13 Sep15%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Mountain Ash rainfall forecast issued today at 1:08 pm. Next forecast at approx. 3:08 am. Rainfall Rainfall AccumulationCobbacombe Cross (Devon) RadarGet WillyWeather+ to remove ads