‹ Mackinac Island weather by month
Typical July weather
Mackinac Island
Michigan · July
79° days
53° nights
about 6 rainy days · 15½ hours of daylight · lake 68°
What to pack
- Light jacket
- Sunscreen
What July feels like
High season, and the fudge shops are as busy as they get; locals call the day-trippers fudgies, without much malice in it. Ferries run constantly and the afternoon boats are standing-room, so go early or stay the night — that is the whole trick to Mackinac.
Expect about 6 days with real rain — enough to notice, not enough to plan around. Humidity stays comfortable; the air never feels heavy.
Can you swim?
The lake runs about 68° — brisk but swimmable.
The numbers
| Typical high | 79° |
|---|---|
| Typical low | 53° |
| Days with real rain | 6 |
| Total rain | 2.7 in |
| Humidity | comfortable |
| Water temperature | 68° |
| Sunrise / sunset (mid-month) | 6:03 am / 9:25 pm |