Griswold Wind ForecastUnited StatesIACass CountyGriswold1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Griswold wind forecast issued today at 10:34 pm. Next forecast at approx. 10:34 am.Griswold Wind Statistics January WindAtlantic (11.8 miles)2026DecemberJanuaryStrongest 8 January, 202618.3mph NWAverage January8.2mphStrongest 10 December, 202531.1mph NWAverage December9.1mphStrongest 8 January, 202618.3mph NWAverage 20268.2mphClimate (2010–Present)Atlantic (11.8 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 10 March, 202143.8mph SWAverage 2021–20269.7mphGet WillyWeather+ to remove ads