Mackinac Island, MI Climate

Mackinac Island, MI is known for its mild climate all year round. Summers in this area are usually warm and sunny, with temperatures rarely breaking 80 degrees Fahrenheit. Winters are generally cooler, but still remain mild compared to other areas of Michigan due to the island's location in Lake Huron. Rainfall is fairly consistent throughout the year with some snowfall during the colder months. The lake also helps to keep temperatures more moderate than they would be on the mainland and makes Mackinac Island an ideal destination for outdoor recreation throughout the year.

Mackinac Island, Michigan gets 30 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Mackinac Island averages 89 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 159 sunny days per year in Mackinac Island. The US average is 205 sunny days.

Mackinac Island gets some kind of precipitation, on average, 131 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 76 degrees
Winter Low: the January low is 10
Rain: averages 30 inches of rain a year
Snow: averages 89 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Mackinac Island is 6.1 (10=best), which means it is less comfortable than most places in Michigan.

9.2 Summer - 3.1 Winter

August, July and June are the most pleasant months in Mackinac Island, while January and February are the least comfortable months.

Climate	Mackinac Island, Michigan	United States
	Unlock	38.1 in.
	88.9 in.	Unlock
	Unlock	106.2 days
	159 days	Unlock
	76.3°	85.8°
	Unlock	21.7°
	6.1	Unlock
	Unlock	4.3
	594 ft.	Unlock

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Mackinac Island with an average high temperature of 76.3°, which ranks it as one of the coolest places in Michigan. In Mackinac Island, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mackinac Island are July, August and June.

In Mackinac Island, there are 0.9 days annually when the high temperature is over 90°, which is one of the coolest places in Michigan.

February has the coldest nighttime temperatures for Mackinac Island with an average of 9.6°. This is colder than most places in Michigan.

In Mackinac Island, there are 162.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Michigan.

In Mackinac Island, there are 18.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Michigan.

Humidity in Mackinac Island is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are August, July and September.

October is the wettest month in Mackinac Island with 3.5 inches of rain, and the driest month is February with 1.4 inches. The wettest season is Winter with 32% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 30.2 inches in Mackinac Island means that it is one of the driest places in Michigan.

December is the rainiest month in Mackinac Island with 13.7 days of rain, and July is the driest month with only 8.9 rainy days. There are 131.1 rainy days annually in Mackinac Island, which is about average compared to other places in Michigan. The rainiest season is Winter when it rains 29% of the time and the driest is Autumn with only a 21% chance of a rainy day.

An annual snowfall of 88.9 inches in Mackinac Island means that it is snowier than most places in Michigan. January is the snowiest month in Mackinac Island with 24.8 inches of snow, and 7 months of the year have significant snowfall.