Porth Joke Rainfall ForecastUnited KingdomSWCornwallPorth JokeToday 8 Apr20%Thu 9 Apr20%Fri 10 Apr35%Sat 11 Apr35%Sun 12 Apr35%Mon 13 Apr40%Porth Joke rainfall forecast issued today at 1:37 am. Next forecast at approx. 3:37 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