The highest day temperature in October 2026 was 69°F. The lowest night temperature was 39°F. The average values for day and night temperatures during October were 56.4°F и 52.7°F respectivly.

The average sea surface temperature in October 2026 for Mackinac Island was 56.3°F. The maximum and minimum values were 50.8°F and 61.6°F respectively.

You can expect various weather conditions during October. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in October for Mackinac Island is 1.3 in. It makes october one of the most rainy months of the year.

The average wind speed in October is 11.6 mph. It makes October one of the most windy months of the year for Mackinac Island.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Mackinac Island in October is 5.6 hours.