Griswold Wind ForecastUnited StatesIACass CountyGriswold1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Griswold wind forecast issued today at 7:34 pm. Next forecast at approx. 7:34 am.Griswold Wind Statistics April WindAtlantic (11.8 miles)2026MarchAprilStrongest 8 April, 202627.7mph SAverage April12.1mphStrongest 15 March, 202636.9mph NNWAverage March10.7mphStrongest 15 March, 202636.9mph NNWAverage 20269.8mphClimate (2010–Present)Atlantic (11.8 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 5 March, 202541.4mph NNWAverage 2021–20269.6mphGet WillyWeather+ to remove ads