Griswold Wind ForecastUnited StatesIACass CountyGriswold1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Griswold wind forecast issued today at 9:31 pm. Next forecast at approx. 9:31 am.Griswold Wind Statistics May WindAtlantic (11.8 miles)2025AprilMayStrongest – Average May–Strongest 28 April, 202533.3mph SSWAverage April11.4mphStrongest 5 March, 202541.4mph NNWAverage 202511.2mphClimate (2010–Present)Atlantic (11.8 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 10 March, 202143.8mph SWAverage 2020–20259.8mphGet WillyWeather+ to remove ads