Isle of Bute - Glencallum Bay Rainfall ForecastUnited KingdomSTArgyll and ButeIsle of Bute - Glencallum BayToday 12 Nov15%Fri 13 Nov50%Sat 14 Nov80%Sun 15 Nov80%Mon 16 Nov10%Tue 17 Nov10%Wed 18 Nov5%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Isle of Bute - Glencallum Bay rainfall forecast issued today at 12:08 pm. Next forecast at approx. 2:08 am. Rainfall Rainfall AccumulationHolehead (Stirling) RadarGet WillyWeather+ to remove ads