Alton Rainfall ForecastUnited KingdomSEHampshireAltonToday 23 Oct50%Sat 24 Oct85%Sun 25 Oct65%Mon 26 Oct10%Alton rainfall forecast issued today at 12:31 am. Next forecast at approx. 2:31 pm.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