Altarnun Rainfall ForecastUnited KingdomSWCornwallAltarnunToday 14 Nov90%Sat 15 Nov50%Sun 16 Nov10%Mon 17 Nov15%Tue 18 Nov40%Wed 19 Nov35%Altarnun rainfall forecast issued today at 12:36 am. Next forecast at approx. 2:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Predannack (Cornwall) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads