Watford Gap Rainfall ForecastUnited KingdomEMNorthamptonshireWatford GapToday 16 Apr10%Sat 17 Apr5%Sun 18 Apr5%Mon 19 Apr10%Tue 20 Apr10%Watford Gap rainfall forecast issued today at 5:31 pm. Next forecast at approx. 7:31 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time National RadarNational SatelliteNational SynopticGet an account to remove ads