Mackinac Island
Michigan, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Mackinac Island, MI

A tranquil neighborhood with homes and a church in a scenic natural park in Mackinac Island, Michigan, a view of the water out back and clear skies
A tranquil neighborhood with homes and a church in a scenic natural park in Mackinac Island, Michigan, a view of the water out back and clear skies
January, like December, is another subzero cold winter month in Mackinac Island, Michigan, with average temperature ranging between min 14.7°F (-9.6°C) and max 23.4°F (-4.8°C). January is the coldest month, with an average high-temperature of 23.4°F (-4.8°C) and an average low-temperature of 14.7°F (-9.6°C). Weather in January »

February, the last month of the winter, in Mackinac Island, is also a subzero cold month, with average temperature varying between 14.4°F (-9.8°C) and 24.3°F (-4.3°C). In February, the average high-temperature is essentially the same as in January - a still freezing cold 24.3°F (-4.3°C). Weather in February »

March, the first month of the spring, in Mackinac Island, is a wintry month, with average temperature fluctuating between 22.3°F (-5.4°C) and 32.7°F (0.4°C). In March, the average high-temperature slightly increases, from a subzero cold 24.3°F (-4.3°C) in February, to a wintry 32.7°F (0.4°C). Weather in March »

April, like March, in Mackinac Island, Michigan, is a wintry spring month, with average temperature fluctuating between 42.3°F (5.7°C) and 31.8°F (-0.1°C). In April, the average high-temperature rises, from a cold 32.7°F (0.4°C) in March, to a still wintry 42.3°F (5.7°C). Weather in April »

The last month of the spring, May, is a fresh month in Mackinac Island, Michigan, with average temperature fluctuating between 55°F (12.8°C) and 41.4°F (5.2°C). In Mackinac Island, the average high-temperature rises, from a wintry 42.3°F (5.7°C) in April, to a cool 55°F (12.8°C). Weather in May »

The first month of the summer, June, is a comfortable month in Mackinac Island, Michigan, with temperature in the range of an average high of 63.5°F (17.5°C) and an average low of 49.5°F (9.7°C). In Mackinac Island, the average high-temperature marginally rises, from a fresh 55°F (12.8°C) in May, to a comfortable 63.5°F (17.5°C). Weather in June »

July in Mackinac Island, Michigan, is an agreeable summer month, with average temperature fluctuating between 57.6°F (14.2°C) and 71.4°F (21.9°C). July is the warmest month, with an average high-temperature of 71.4°F (21.9°C) and an average low-temperature of 57.6°F (14.2°C). Weather in July »

The last month of the summer, August, is also an agreeable month in Mackinac Island, Michigan, with average temperature varying between 58.6°F (14.8°C) and 71.1°F (21.7°C). In Mackinac Island, the average high-temperature is essentially the same as in July - a still agreeable 71.1°F (21.7°C). Weather in August »

The first month of the autumn, September, is still a comfortable month in Mackinac Island, Michigan, with temperature in the range of an average high of 64.8°F (18.2°C) and an average low of 53.1°F (11.7°C). In September, the average high-temperature slightly decreases, from a pleasant 71.1°F (21.7°C) in August, to a comfortable 64.8°F (18.2°C). Weather in September »

October, like September, in Mackinac Island, Michigan, is a cool autumn month, with average temperature fluctuating between 52.3°F (11.3°C) and 43.7°F (6.5°C). In Mackinac Island, the average high-temperature in October drops, from a comfortable 64.8°F (18.2°C) in September, to a fresh 52.3°F (11.3°C). Weather in October »

November, the last month of the autumn, in Mackinac Island, is also a wintry month, with temperature in the range of an average low of 32.9°F (0.5°C) and an average high of 40.3°F (4.6°C). In Mackinac Island, the average high-temperature in November drops, from a fresh 52.3°F (11.3°C) in October, to a wintry 40.3°F (4.6°C). Weather in November »

December, the first month of the winter, in Mackinac Island, is still a freezing cold month, with temperature in the range of an average low of 23°F (-5°C) and an average high of 30.2°F (-1°C). In Mackinac Island, the average high-temperature in December drops, from a wintry 40.3°F (4.6°C) in November, to a freezing cold 30.2°F (-1°C). Weather in December »

What is the coldest month in Mackinac Island?

With an average high-temperature of 23.4°F (-4.8°C) and an average low-temperature of 14.7°F (-9.6°C), January is the coldest month in Mackinac Island.

What is the most humid month in Mackinac Island?

Months with the highest humidity in Mackinac Island, Michigan, are January and February, with an average relative humidity of 89%.

How many days does it rain in Mackinac Island?

In Mackinac Island, Michigan, during the entire year, the rain falls for 131 days and collects up to 21.22" (539mm) of precipitation.

What is the driest month in Mackinac Island?

January is the month with the least rainfall. Rain falls for 5.8 days and accumulates 1.3" (33mm) of precipitation.

When does it snow in Mackinac Island?

Months with snowfall in Mackinac Island are January through May, October through December.

How much does it snow in Mackinac Island?

Throughout the year, there are 93.6 snowfall days, and 27.91" (709mm) of snow is accumulated.

What is the snowiest month in Mackinac Island?

The month with the most snowfall is January when snow falls for 21.9 days and typically aggregates up to 5.91" (150mm) of snow.

What is the month with the least sunshine in Mackinac Island?

January has the least sunshine of the year in Mackinac Island, with an average of 1.9h of sunshine.

When is the lowest UV index in Mackinac Island?

January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Mackinac Island, Michigan.

What months are the ocean coldest in Mackinac Island?

Through and April, with an average ocean temperature of 35.6°F (2°C).

What is the least humid month in Mackinac Island?

The least humid month is May, with an average relative humidity of 75%.

When it does not snow in Mackinac Island?

June through September are months without snowfall in Mackinac Island, Michigan.

When are the longest days in Mackinac Island?

The month with the longest days in Mackinac Island, Michigan, is June, with an average of 15.7h of daylight.

What is the month with the highest UV index in Mackinac Island?

June through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the warmest month in Mackinac Island?

With an average high-temperature of 71.4°F (21.9°C) and an average low-temperature of 57.6°F (14.2°C), July is the warmest month.

What month has the most sunshine in Mackinac Island?

July has the most sunshine of the year, with an average of 10.1h of sunshine.

What month is the ocean warmest in Mackinac Island?

With an average ocean temperature of 60.8°F (16°C), August is the month with the warmest seawater in Mackinac Island, Michigan.

What is the rainiest month in Mackinac Island?

The month with the most rainfall in Mackinac Island is October when the rain falls for 16.5 days and typically aggregates up to 2.72" (69mm) of precipitation.

What is the month with the shortest days in Mackinac Island?

December has the shortest days of the year, with an average of 8.7h of daylight.
Average temperature - Mackinac Island, MI
Average humidity - Mackinac Island, MI
Average rainfall - Mackinac Island, MI

The wettest month (with the highest rainfall) is October (2.72").
The driest month (with the lowest rainfall) is January (1.3").

Average rainfall days - Mackinac Island, MI

The month with the highest number of rainy days is October (16.5 days).
The month with the lowest number of rainy days is February (5.3 days).

Average snowfall - Mackinac Island, MI
Average snowfall days - Mackinac Island, MI

The month with the highest number of snowfall days is January (21.9 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

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