Alton Rainfall ForecastUnited KingdomSEHampshireAltonToday 1 Jul5%Wed 2 Jul5%Thu 3 JulNo RainFri 4 Jul5%Sat 5 Jul20%Sun 6 Jul35%Alton rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads