Onchan Rainfall ForecastUnited KingdomDGDumfries and GallowayOnchanToday 13 Oct55%Wed 14 Oct45%Thu 15 Oct85%Fri 16 Oct25%Sat 17 OctNo RainSun 18 Oct5%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Onchan rainfall forecast issued today at 1:08 am. Next forecast at approx. 3:08 pm. Rainfall Rainfall AccumulationCastor Bay (Lurgan) RadarGet WillyWeather+ to remove ads