Penn Rainfall ForecastUnited KingdomSEBuckinghamshirePennToday 7 Feb85%Sun 8 Feb65%Mon 9 Feb15%Tue 10 Feb60%Wed 11 Feb55%Thu 12 Feb45%Penn rainfall forecast issued today at 12:35 am. Next forecast at approx. 2:35 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Chenies (Hertfordshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads