Griswold Wind ForecastUnited StatesIACass CountyGriswold1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Griswold wind forecast issued today at 7:36 pm. Next forecast at approx. 7:36 am. Wind Speed Wind GustGriswold Wind Statistics July WindAtlantic (11.8 miles)2026JuneJulyStrongest 8 July, 202620.8mph SSWAverage July6.6mphStrongest 17 June, 202625.3mph NWAverage June8.3mphStrongest 15 March, 202636.9mph NNWAverage 20269.2mphClimate (2021–2026)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