Weather in Mackinac Island: September
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Average day temperature: | 63.3°F |
| Average night temperature: | 58.2°F | |
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Sea water temperature: | 62.8°F |
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Number of sunny days: | 13 days |
| Day length: | 11.7 - 13.3 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.8 in. | |
| more information | ||
forecast
| Mackinac Island |
temperature
| Mackinac Island |
Air temperature in September, °F
The highest day temperature during September of 2024 was 70°F. At the same time the lowest night temperature was 48°F. Day and night temperature averages during September were 64.4°F and 59.1°F.
Sea water temperature in Mackinac Island in September, °F
The average sea water temperature in September of 2024 was 64.5°F. The highest and lowest sea temperatures during the month were 66.0°F and 62.1°F.
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Mackinac Island in September is 0.8 in. Other months of the year show relatively similar values.
The average wind speed value in September is 9.5 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 September is: 7.7.
Best time for vacation in Mackinac Island
Mackinac Island on a weather map
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