Grafton Underwood Rainfall ForecastUnited KingdomEMNorthamptonshireGrafton UnderwoodToday 14 May90%Wed 15 May45%Thu 16 May35%Fri 17 May40%Sat 18 May35%Sun 19 May10%Grafton Underwood rainfall forecast issued yesterday at 7:38 pm. Next forecast at approx. 9:38 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Chenies (Hertfordshire) RadarNational SatelliteNational SynopticGet an account to remove ads