July weather forecastMackinac Island, MI
July
Weather in July
July signifies the height of summer on Mackinac Island. The Island experiences its warmest weather, an average high reaching up to 71.4°F (21.9°C). The days are the longest and the sunshine reaches its zenith. Despite the scorching sun, generous rain ensures the greenery remains hydrated and in full bloom. The sultry weather coupled with the beautiful scenery makes this month a peak time for outdoor activities.Temperature
The warmest month in Mackinac Island is July, with an average high-temperature of 71.4°F (21.9°C) and an average low-temperature of 57.6°F (14.2°C).Humidity
The average relative humidity in July is 78%.Rainfall
In Mackinac Island, during July, the rain falls for 13 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 131 rainfall days, and 21.22" (539mm) of precipitation is accumulated.Snowfall
In Mackinac Island, snow does not fall in June through September.Ocean temperature
In July, the average ocean temperature in Mackinac Island, Michigan, is 53.6°F (12°C).Note: Swimming in 53.6°F (12°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
In July, the average length of the day in Mackinac Island is 15h and 19min.On the first day of the month, sunrise is at 5:52 am and sunset at 9:32 pm. On the last day of July, sunrise is at 6:21 am and sunset at 9:08 pm EDT.
Sunshine
The month with the most sunshine in Mackinac Island is July, with an average of 10.1h of sunshine.UV index
The months with the highest UV index in Mackinac Island are June through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 5 in July translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Mackinac Island, MI
- Average high temperature in July: 71.4°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 July: 57.6°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 July
Mackinac Island, MI
- Average pressure in July: 29.94"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 July
Mackinac Island, MI
- Average wind speed in July: 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 July
Mackinac Island, MI
- Average humidity in July: 78%
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 July
Mackinac Island, MI
- Average rainfall in July: 1.46"
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 July
Mackinac Island, MI
- Average rainfall days in July: 13 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 July
Mackinac Island, MI
- Average snowfall in July: 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 July
Mackinac Island, MI
- Average snowfall days in July: 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 July
Mackinac Island, MI
- Average sea temperature in July: 54°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 July /
Average sunshine in July
Mackinac Island, MI
- Average daylight in July: 15h and 18min
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 July: 10h and 6min
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 July
Mackinac Island, MI
- Average sunshine days in July: 16.3 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 July
Mackinac Island, MI
- Average UV index in July: 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 July
Mackinac Island, MI
- Average cloud cover in July: 32
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 July
Mackinac Island, MI
- Average visibility in July: 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).
