Johnstown Rainfall ForecastUnited KingdomWLWrexhamJohnstownToday 19 Dec10%Sat 20 Dec50%Sun 21 Dec75%Mon 22 Dec15%Tue 23 Dec20%Wed 24 Dec15%Johnstown rainfall forecast issued today at 6:36 am. Next forecast at approx. 8:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Clee Hill (Shropshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads