S
M
T
W
T
F
S
30
72°
53°
31
72°
52°
1
69°
54°
2
69°
57°
3
74°
54°
4
74°
53°
5
69°
59°
6
71°
61°
7
78°
60°
8
76°
55°
9
76°
53°
10
69°
55°
11
69°
57°
12
71°
55°
13
Hist. Avg.
69°
52°
14
Hist. Avg.
69°
52°
15
Hist. Avg.
68°
52°
16
Hist. Avg.
68°
51°
17
Hist. Avg.
67°
51°
18
Hist. Avg.
67°
51°
19
Hist. Avg.
67°
50°
20
Hist. Avg.
66°
50°
21
Hist. Avg.
66°
50°
22
Hist. Avg.
65°
49°
23
Hist. Avg.
65°
49°
24
Hist. Avg.
64°
48°
25
Hist. Avg.
64°
48°
26
Hist. Avg.
64°
48°
27
Hist. Avg.
63°
47°
28
Hist. Avg.
63°
47°
29
Hist. Avg.
62°
46°
30
Hist. Avg.
62°
46°
1
Hist. Avg.
62°
46°
2
Hist. Avg.
61°
45°
3
Hist. Avg.
61°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Harbor Springs
Harbor Springs's September 2026 forecast shows daily high temperatures ranging from 69° to 78°, with overnight lows between 52° and 61°. The average high for September is 72° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Harbor Springs. See also: October | November | December.
