Diamond Wind ForecastUnited StatesILGrundy CountyDiamond1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Diamond wind forecast issued today at 5:32 pm. Next forecast at approx. 5:32 am.Diamond Wind Statistics April WindJoliet Regional Airport (16.2 miles)2025MarchAprilStrongest – Average April–Strongest 28 March, 202521.9mph WSWAverage March8.8mphStrongest 28 March, 202521.9mph WSWAverage 20258.1mphClimate (2010–Present)Joliet Regional Airport (16.2 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 5 November, 202225.3mph SWAverage 2020–20257.4mphGet WillyWeather+ to remove ads