London Colney Rainfall ForecastUnited KingdomEEHertfordshireLondon ColneyToday 18 Jan20%Mon 19 Jan45%Tue 20 Jan75%Wed 21 Jan55%Thu 22 Jan50%Fri 23 Jan55%Sat 24 Jan50%London Colney rainfall forecast issued today at 6:36 pm. Next forecast at approx. 8:36 am.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