Alton Rainfall ForecastUnited KingdomSEHampshireAltonToday 6 Aug15%Fri 7 Aug5%Sat 8 Aug5%Sun 9 Aug5%Mon 10 Aug10%Alton rainfall forecast issued today at 2:31 am. Next forecast at approx. 4:31 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