Griswold Wind ForecastUnited StatesIACass CountyGriswold1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Griswold wind forecast issued today at 9:30 pm. Next forecast at approx. 9:30 am.Griswold Wind Statistics June WindAtlantic (11.8 miles)2025MayJuneStrongest 2 June, 202521.9mph SSWAverage June8.1mphStrongest 15 May, 202530mph WSWAverage May9mphStrongest 5 March, 202541.4mph NNWAverage 202510.4mphClimate (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