Johnstown Rainfall ForecastUnited KingdomWLWrexhamJohnstownToday 18 Sep80%Fri 19 Sep70%Sat 20 Sep80%Sun 21 Sep50%Mon 22 Sep10%Tue 23 Sep10%Johnstown rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 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