Watford Gap Rainfall ForecastUnited KingdomEMNorthamptonshireWatford GapToday 4 Jan15%Mon 5 Jan5%Tue 6 Jan50%Wed 7 Jan20%Thu 8 Jan25%Fri 9 Jan20%Watford Gap rainfall forecast issued today at 12:36 am. Next forecast at approx. 2:36 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