Merrimac Wind ForecastUnited StatesILMonroe CountyMerrimac1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Merrimac wind forecast issued today at 5:31 pm. Next forecast at approx. 5:31 am.Merrimac Wind Statistics April WindSt. Louis Downtown Airport (16.2 miles)2025MarchAprilStrongest – Average April–Strongest 14 March, 202577mph SSWAverage March9.3mphStrongest 14 March, 202577mph SSWAverage 20258.3mphClimate (2010–Present)St. Louis Downtown Airport (16.2 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 14 March, 202577mph SSWAverage 2020–20257.2mphGet WillyWeather+ to remove ads