Barnhart Wind ForecastUnited StatesMOJefferson CountyBarnhart1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Barnhart wind forecast issued today at 5:40 pm. Next forecast at approx. 5:40 am.Barnhart Wind Statistics May WindSt. Louis Downtown Airport (19.9 miles)2026AprilMayStrongest – Average May–Strongest 12 April, 202649mph SAverage April9.1mphStrongest 26 March, 202650.1mph NNEAverage 20268.5mphClimate (2010–Present)St. Louis Downtown Airport (19.9 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 14 March, 202577mph SSWAverage 2021–20267mphGet WillyWeather+ to remove ads