S
M
T
W
T
F
S
30
66°
56°
31
75°
56°
1
75°
46°
2
73°
46°
3
64°
48°
4
62°
46°
5
62°
47°
6
63°
46°
7
68°
55°
8
70°
55°
9
73°
53°
10
70°
50°
11
68°
47°
12
65°
50°
13
67°
48°
14
66°
44°
15
60°
45°
16
64°
47°
17
67°
48°
18
69°
50°
19
63°
47°
20
68°
41°
21
61°
43°
22
58°
50°
23
62°
51°
24
68°
43°
25
67°
47°
26
56°
50°
27
64°
47°
28
64°
43°
29
59°
48°
30
60°
44°
1
66°
40°
2
64°
38°
3
51°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Traverse Bay
Traverse Bay's September 2026 forecast shows daily high temperatures ranging from 51° to 75°, with overnight lows between 38° and 56°. The average high for September is 65° with an average low of 47°. 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 Traverse Bay. See also: October | November | December.