Rock Valley Wind ForecastUnited StatesIASioux CountyRock Valley1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Rock Valley wind forecast issued today at 9:32 am. Next forecast at approx. 9:32 pm. Wind Speed Wind GustRock Valley Wind Statistics September WindSheldon (23 miles)2026AugustSeptemberStrongest – Average September–Strongest 29 August, 202619.7mph SAverage August7.5mphStrongest 18 February, 202638mph WAverage 202610mphClimate (2021–2026)Sheldon (23 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 15 December, 202146.1mph WAverage 2021–202610.8mphGet WillyWeather+ to remove ads