RNAS Portland Heliport Airport Rainfall ForecastUnited KingdomSWDorsetRNAS Portland Heliport AirportToday 4 May50%Tue 5 May10%Wed 6 May10%Thu 7 May5%Fri 8 May10%Sat 9 May55%RNAS Portland Heliport Airport rainfall forecast issued today at 7:36 am. Next forecast at approx. 9:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads