Mackinac Island Rainfall ForecastUnited StatesMIMackinac CountyMackinac IslandToday 19 Apr60%Sun 20 AprNo RainMon 21 Apr95%Tue 22 Apr35%Wed 23 Apr30%Thu 24 Apr15%Fri 25 Apr40%Mackinac Island rainfall forecast issued today at 7:04 pm. Next forecast at approx. 9:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Gaylord RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads