Weather in Mackinac Island: October
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Average day temperature: | 52.6°F |
| Average night temperature: | 49.3°F | |
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Sea water temperature: | 55.9°F |
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Number of sunny days: | 10 days |
| Day length: | 10.1 - 11.7 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.3 in. | |
| more information | ||
forecast
| Mackinac Island |
temperature
| Mackinac Island |
Air temperature in October, °F
The highest day temperature during October of 2025 was 74°F. At the same time the lowest night temperature was 39°F. Daily and nightly averages during October were 54.9°F and 50.7°F.
Sea water temperature in Mackinac Island in October, °F
The average sea water temperature in October of 2025 was 58.1°F. The highest and lowest sea temperatures during the month were 62.8°F and 52.2°F.
Number of sunny, partly cloudy and cloudy days in October is almost equal.
Precipitation total in October, in.
Precipitation total value in Mackinac Island in October is 1.3 in. Other months of the year show relatively similar values.
The average wind speed value in October is 11.1 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in October is: 6.0.
Best time for vacation in Mackinac Island
Mackinac Island on a weather map
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