Portsmouth Rainfall ForecastUnited KingdomSEHampshirePortsmouthToday 7 Nov95%Sat 8 NovNo RainSun 9 Nov80%Mon 10 Nov65%Tue 11 Nov50%Wed 12 Nov55%Thu 13 Nov50%Portsmouth rainfall forecast issued today at 6:37 pm. Next forecast at approx. 8:37 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