- September temperatures on Mackinac Island average 66 degrees for daytime highs and 50 degrees for nighttime lows
- October temperatures on Mackinac Island average 53 degrees for daytime highs and 39 degrees for nighttime lows

A Look at Fall on Mackinac Island
In addition to temperatures that make Mackinac Island feel like fall, it looks the part, too. Below are some glimpses of Mackinac Island in all its autumnal glory. And here's a packing list to prepare for your fall trip to Mackinac Island.






