RNAS Portland Heliport Airport Rainfall ForecastUnited KingdomSWDorsetRNAS Portland Heliport AirportToday 22 May10%Fri 23 May60%Sat 24 May80%Sun 25 May15%Mon 26 May30%Tue 27 May50%Wed 28 May15%RNAS Portland Heliport Airport rainfall forecast issued today at 1:37 pm. Next forecast at approx. 3:37 am.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