Johnstone Dam Wind ForecastUnited StatesNDGolden Valley CountyJohnstone Dam1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Johnstone Dam wind forecast issued today at 4:32 am. Next forecast at approx. 4:32 pm.Johnstone Dam Wind Statistics July WindBEACH (12.4 miles)2025JuneJulyStrongest – Average July–Strongest 8 June, 202538mph NWAverage June10.6mphStrongest 16 May, 202540.3mph NWAverage 202512mphClimate (2011–Present)BEACH (12.4 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 19 December, 202443.8mph WNWAverage 2020–202511.6mphGet WillyWeather+ to remove ads