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, the same as December, in Mackinac Island, Michigan, is a freezing cold winter month, with average temperature fluctuating between 23.4°F (-4.8°C) and 14.7°F (-9.6°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 ranging between min 14.4°F (-9.8°C) and max 24.3°F (-4.3°C). In February, the average high-temperature is almost 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 cold month, with average temperature ranging between min 22.3°F (-5.4°C) and max 32.7°F (0.4°C). In Mackinac Island, the average high-temperature in March marginally rises, 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, the same as March, is another cold spring month in Mackinac Island, Michigan, with average temperature fluctuating between 42.3°F (5.7°C) and 31.8°F (-0.1°C). In Mackinac Island, Michigan, 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 temperature in the range of an average low of 41.4°F (5.2°C) and an average high of 55°F (12.8°C). In May, the average high-temperature increases, from a cold 42.3°F (5.7°C) in April, to a fresh 55°F (12.8°C). Weather in May »

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

July is a pleasant summer month in Mackinac Island, Michigan, with average temperature varying between 57.6°F (14.2°C) and 71.4°F (21.9°C). 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. Weather in July »

The last month of the summer, August, is another pleasant month in Mackinac Island, Michigan, with average temperature fluctuating between 58.6°F (14.8°C) and 71.1°F (21.7°C). In August, the average high-temperature is relatively the same as in July - a still pleasant 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 average temperature ranging between max 64.8°F (18.2°C) and min 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 an enjoyable 64.8°F (18.2°C). Weather in September »

October, like September, in Mackinac Island, Michigan, is a cool autumn month, with average temperature varying between 43.7°F (6.5°C) and 52.3°F (11.3°C). In October, the average high-temperature 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 average temperature ranging between max 40.3°F (4.6°C) and min 32.9°F (0.5°C). In Mackinac Island, Michigan, the average high-temperature decreases, from a cool 52.3°F (11.3°C) in October, to a wintry 40.3°F (4.6°C). Weather in November »

The first month of the winter, December, is still a freezing cold month in Mackinac Island, Michigan, with average temperature fluctuating between 23°F (-5°C) and 30.2°F (-1°C). In December, the average high-temperature drops, from a wintry 40.3°F (4.6°C) in November, to a subzero 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.

What is the most humid month in Mackinac Island?

January and February, with an average relative humidity of 89%, are most humid months.

How much does it rain in Mackinac Island?

Throughout the year, there are 131 rainfall days, and 21.22" (539mm) of precipitation is accumulated.

What is the driest month in Mackinac Island?

The month with the least rainfall is January when the rain falls for 5.8 days and typically collects 1.3" (33mm) of precipitation.

When does it snow in Mackinac Island?

January through May, October through December are months with snowfall.

How much does it snow in Mackinac Island?

In Mackinac Island, Michigan, during the entire year, snow falls for 93.6 days, and aggregates up to 27.91" (709mm) of snow.

When does it snow the most in Mackinac Island?

The month with the most snowfall in Mackinac Island, Michigan, 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?

The month with the least sunshine is January, 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.

When is 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?

May is the least humid month in Mackinac Island, with an average relative humidity of 75%.

When it does not snow in Mackinac Island?

In Mackinac Island, Michigan, snow does not fall in June through September.

When are the longest days in Mackinac Island?

June has the longest days of the year, with an average of 15.7h of daylight.

What are the months 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?

With an average of 10.1h of sunshine, July has the most sunshine of the year in Mackinac Island, Michigan.

What is the month with the warmest ocean in Mackinac Island?

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

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?

With an average of 8.7h of daylight, December has the shortest days of the year in Mackinac Island.
Average temperature - Mackinac Island, MI
Average pressure - Mackinac Island, MI

The month with the highest atmospheric pressure is March (1018.8mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).

Average wind speed - Mackinac Island, MI

The windiest months (with the highest average wind speed) are November and December (17.5km/h).
The calmest months (with the lowest average wind speed) are June and July (12.2km/h).

Average humidity - Mackinac Island, MI
Average rainfall - Mackinac Island, MI
Average rainfall days - Mackinac Island, MI

The month with the highest number of rainy days is October (16.5 days).
The month with the least 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 least snowfall days are June, July, August and September (0 days).

Average sea temperature - Mackinac Island, MI
Average daylight / Average sunshine - Mackinac Island, MI

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

The month with the most sunshine is July (Average sunshine: 10.1h).
The month with the least sunshine is January (Average sunshine: 1.9h).

Average sunshine days - Mackinac Island, MI

The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is January (7.1 days).

Average UV index - Mackinac Island, MI
Average visibility - Mackinac Island, MI

Months with the highest visibility are April, May, June, July, August, September, October and November (9km).
Months with the lowest visibility are January, February, March and December (8km).