Jack Mountain Wind ForecastUnited StatesMTJefferson CountyJack Mountain1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Jack Mountain wind forecast issued today at 8:29 am. Next forecast at approx. 8:29 pm.Jack Mountain Wind Statistics May WindHelena Regional Airport (23 miles)2025AprilMayStrongest – Average May–Strongest 12 April, 202552.1mph WAverage April8.2mphStrongest 12 April, 202552.1mph WAverage 20256.6mphClimate (2010–Present)Helena Regional Airport (23 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 December, 202466mph WAverage 2020–20257.3mphGet WillyWeather+ to remove ads