Dumbarton Rainfall ForecastUnited KingdomSTWest DunbartonshireDumbartonToday 26 Aug85%Thu 27 Aug60%Fri 28 Aug55%Sat 29 Aug50%Sun 30 Aug60%Mon 31 Aug55%Tue 1 Sep40%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dumbarton rainfall forecast issued today at 1:08 pm. Next forecast at approx. 3:08 am. Rainfall Rainfall AccumulationHolehead (Stirling) RadarGet WillyWeather+ to remove ads