Average data for 10 years
1 September
Sunday
+21°
+17°
2 September
Monday
+20°
+17°
3 September
Tuesday
+20°
+18°
4 September
Wednesday
+18°
+16°
5 September
Thursday
+20°
+16°
6 September
Friday
+21°
+17°
7 September
Saturday
+19°
+16°
8 September
Sunday
+19°
+16°
9 September
Monday
+19°
+16°
10 September
Tuesday
+18°
+15°
11 September
Wednesday
+19°
+15°
12 September
Thursday
+17°
+16°
13 September
Friday
+17°
+15°
14 September
Saturday
+17°
+15°
15 September
Sunday
+16°
+12°
16 September
Monday
+19°
+14°
17 September
Tuesday
+17°
+15°
18 September
Wednesday
+17°
+14°
19 September
Thursday
+19°
+14°
20 September
Friday
+18°
+16°
21 September
Saturday
+16°
+14°
22 September
Sunday
+17°
+14°
23 September
Monday
+18°
+14°
24 September
Tuesday
+18°
+14°
25 September
Wednesday
+19°
+14°
26 September
Thursday
+18°
+15°
27 September
Friday
+17°
+14°
28 September
Saturday
+15°
+14°
29 September
Sunday
+13°
+11°
30 September
Monday
+14°
+11°
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In September, the weather in Mackinaw City is typically warm. Average daily high temperature in September is about 18 degrees above zero. On average, Mackinaw City has 14 sunny, 12 partly cloudy, and 4 rainy days in September. The rains are usually moderate.