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Mackinaw Island Weather
offers moderate summer temperatures with cool lake breezes. For decades, visitors have been coming to the island in summer to escape the heat of the cities. In summer, with cool mornings and warmer afternoons, Islanders suggest dressing in layers, shedding sweaters, etc, as the day progresses putting them on again in the cool of the evening. Winters on Mackinaw Island are cold with snow. By February, the Straits freeze and Lake Huron is covered with ice. At that time, an ice “bridge” forms between Mackinaw Island and St. Ignace and residents are allowed to use the bridge for snow mobile travel. Average temperatures: May 50-degrees, June 64-degrees, July 70-degrees, August 71-degrees, September 63-degrees, and October 50-degrees.
Average Monthly Temperature in °F
| |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
| High |
25° |
26° |
35° |
47° |
60° |
69° |
75° |
74° |
66° |
54° |
41° |
30° |
|
| Low |
12° |
12° |
20° |
32° |
43° |
53° |
60° |
60° |
52° |
42° |
32° |
21° |
|
| Mean |
18° |
19° |
28° |
39° |
51° |
61° |
67° |
67° |
59° |
48° |
36° |
26° |
|
| Precip. |
1.7" |
1.0" |
1.6" |
2.0" |
2.4" |
2.5" |
2.7" |
2.6" |
3.1" |
2.9" |
2.4" |
1.6" |
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