June weather forecastMackinac Island, MI

June
Weather in June
June marks the start of summer on Mackinac Island with higher temperatures reaching an average high of 63.5°F (17.5°C). The extended daylight hours from 15 to 15.7 hours work hand in hand with the warm weather to invigorate the island's amenities. Sunnier longer days are favoured by an increase in relative humidity. The rainfall reduces slightly enhancing the overall pleasant conditions. As summer settles in, it paves the way for vibrant and dynamic outdoors.Temperature
Entering June, Mackinac Island notices a subtle temperature elevation, with the average high-temperature advancing from May's fresh 55°F (12.8°C) to an enjoyable 63.5°F (17.5°C). June brings an average low-temperature of 49.5°F (9.7°C) to Mackinac Island.Humidity
In Mackinac Island, the average relative humidity in June is 77%.Rainfall
In Mackinac Island, in June, it is raining for 11.5 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, in Mackinac Island, there are 131 rainfall days, and 21.22" (539mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Mackinac Island.Ocean temperature
In Mackinac Island, the average seawater temperature in June is 42.8°F (6°C).Note: Engaging in a swim in 42.8°F (6°C) can threaten life. Brief exposure to 55.4°F (13°C) waters is uneasy, and submersion below 50°F (10°C) can lead to cold shock and disrupted breathing patterns, varying by individual.
Daylight
With an average of 15h and 42min of daylight, June has the longest days of the year in Mackinac Island.On the first day of the month, sunrise is at 5:51 am and sunset at 9:21 pm. On the last day of June, in Mackinac Island, sunrise is at 5:52 am and sunset at 9:32 pm EDT.
Sunshine
In June, the average sunshine is 9.7h.UV index
June through August, with an average maximum UV index of 5, are months with the highest UV index in Mackinac Island. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 5 in June, converts into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Mackinac Island, MI
- Average high temperature in June: 63.5°F
The warmest month (with the highest average high temperature) is July (71.4°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in June: 49.5°F
The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in June
Mackinac Island, MI
- Average pressure in June: 29.92"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in June
Mackinac Island, MI
- Average wind speed in June: 7.6mph
The windiest months (with the highest average wind speed) are November and December (10.9mph).
The calmest months (with the lowest average wind speed) are June and July (7.6mph).
Average humidity in June
Mackinac Island, MI
- Average humidity in June: 77%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (75%).
Average rainfall in June
Mackinac Island, MI
- Average rainfall in June: 1.93"
The wettest month (with the highest rainfall) is October (2.72").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in June
Mackinac Island, MI
- Average rainfall days in June: 11.5 days
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 in June
Mackinac Island, MI
- Average snowfall in June: 0"
The month with the highest snowfall is January (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in June
Mackinac Island, MI
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (21.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in June
Mackinac Island, MI
- Average sea temperature in June: 43°F
The best month for swimming (with the highest average sea temperature) is August (61°F).
The coldest months (with the lowest average sea temperature) are February, March and April (36°F).
Average daylight in June /
Average sunshine in June
Mackinac Island, MI
- Average daylight in June: 15h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in June: 9h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in June
Mackinac Island, MI
- Average sunshine days in June: 16.5 days
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 in June
Mackinac Island, MI
- Average UV index in June: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in June
Mackinac Island, MI
- Average cloud cover in June: 37
The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in June
Mackinac Island, MI
- Average visibility in June: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).





