Grafton Underwood Rainfall ForecastUnited KingdomEMNorthamptonshireGrafton UnderwoodToday 23 Oct10%Fri 24 Oct60%Sat 25 Oct5%Sun 26 Oct50%Mon 27 Oct35%Tue 28 Oct15%Wed 29 Oct10%Grafton Underwood rainfall forecast issued today at 7:37 pm. Next forecast at approx. 9:37 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