Trehan Rainfall ForecastUnited KingdomSWCornwallTrehanToday 29 Mar50%Sat 30 Mar55%Sun 31 Mar50%Mon 1 Apr40%Tue 2 Apr60%Wed 3 Apr35%Thu 4 Apr55%Trehan rainfall forecast issued today at 12:43 pm. Next forecast at approx. 2:43 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Predannack (Cornwall) RadarNational SatelliteNational SynopticGet an account to remove ads