Johnstone Castle Wind ForecastUnited KingdomSTRenfrewshireJohnstone Castle1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Johnstone Castle wind forecast issued today at 1:08 am. Next forecast at approx. 1:08 pm.Johnstone Castle Wind Statistics June WindGlasgow/bishopton (9km)2026MayJuneStrongest 4 June, 202615.7mph WAverage June5.2mphStrongest 7 May, 202617.9mph SSWAverage May5.9mphStrongest 5 April, 202633.6mph WNWAverage 20267.7mphClimate (2011–Present)Glasgow/bishopton (9km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 24 January, 202544.7mph WSWAverage 2021–20266.3mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average June15%8.75%2.5%CalmStrongJune Wind RoseJune (5 Year Average)5 Year Average Annual5 Year Average June27.5%15%2.5%CalmStrongGet WillyWeather+ to remove ads