S
M
T
W
T
F
S
30
83°
64°
31
85°
68°
1
87°
66°
2
80°
17°
3
78°
62°
4
79°
67°
5
81°
61°
6
78°
53°
7
78°
54°
8
72°
56°
9
81°
59°
10
73°
50°
11
78°
44°
12
82°
54°
13
66°
46°
14
47°
39°
15
74°
55°
16
71°
54°
17
71°
56°
18
65°
54°
19
62°
54°
20
66°
53°
21
60°
47°
22
64°
46°
23
70°
42°
24
71°
46°
25
64°
51°
26
70°
39°
27
70°
43°
28
72°
44°
29
72°
56°
30
69°
54°
1
67°
55°
2
69°
51°
3
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Manistee
Manistee's September 2026 forecast shows daily high temperatures ranging from 67° to 72°, with overnight lows between 39° and 56°. The average high for September is 70° with an average low of 49°. 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 Manistee. See also: October | November | December.