Joanna Wind ForecastUnited StatesPABerks CountyJoanna1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Joanna wind forecast issued today at 8:31 am. Next forecast at approx. 8:31 pm.Joanna Wind Statistics July WindChester County Airport (13 miles)2025JuneJulyStrongest – Average July–Strongest 20 June, 202519.7mph WNWAverage June6.4mphStrongest 8 April, 202527.7mph WNWAverage 20258.6mphClimate (2010–Present)Chester County Airport (13 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 8 April, 202527.7mph WNWAverage 2020–20257.5mphGet WillyWeather+ to remove ads