Johnstone Rainfall ForecastUnited KingdomSTRenfrewshireJohnstoneToday 29 May60%Sat 30 May80%Sun 31 May35%Mon 1 Jun70%Tue 2 Jun55%Wed 3 Jun60%Johnstone rainfall forecast issued yesterday at 7:35 pm. Next forecast at approx. 9:35 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Holehead (Stirling) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads