Portland Rainfall ForecastUnited KingdomSWDorsetPortlandToday 9 Nov85%Tue 10 Nov85%Wed 11 Nov25%Thu 12 Nov10%Fri 13 Nov5%Sat 14 Nov10%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Portland rainfall forecast issued today at 12:08 am. Next forecast at approx. 2:08 pm. Rainfall Rainfall AccumulationDean Hill (Wiltshire) RadarGet WillyWeather+ to remove ads