Monthly weather forecast and climate
Mackinac Island, MI

What is the coldest month in Mackinac Island?

The coldest month is January, with an average high-temperature of 24.8°F (-4°C) and an average low-temperature of 6.8°F (-14°C).

How much does it rain in Mackinac Island?

In Mackinac Island, Michigan, during the entire year, the rain falls for 168 days, and collects up to 31.3" (795mm) of precipitation.

What is the driest month in Mackinac Island?

The month with the least rainfall in Mackinac Island is February when the rain falls for 14 days and typically collects 1.5" (37mm) of precipitation.

What is the warmest month in Mackinac Island?

With an average high-temperature of 77°F (25°C) and an average low-temperature of 53.6°F (12°C), July is the warmest month in Mackinac Island.

What is the wettest month in Mackinac Island?

The month with the most rainfall is September when the rain falls for 13 days and typically aggregates up to 3.9" (99mm) of precipitation.
Average rainfall - Mackinac Island, MI
Average rainfall days - Mackinac Island, MI
Average sea temperature - Mackinac Island, MI

The best month for swimming (with the highest average sea temperature) is August (61°F).
Coldest months (with the lowest average sea temperature) are February, March and April (36°F).

Average daylight / Average sunshine - Mackinac Island, MI
Average UV index - Mackinac Island, MI
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