S
M
T
W
T
F
S
30
77°
70°
31
87°
71°
1
85°
68°
2
78°
66°
3
76°
67°
4
79°
65°
5
77°
64°
6
79°
63°
7
78°
65°
8
74°
62°
9
74°
58°
10
71°
57°
11
72°
55°
12
74°
61°
13
74°
60°
14
70°
60°
15
74°
60°
16
74°
59°
17
72°
59°
18
71°
58°
19
72°
59°
20
73°
59°
21
72°
60°
22
73°
59°
23
72°
59°
24
72°
58°
25
71°
57°
26
72°
58°
27
71°
57°
28
71°
57°
29
70°
56°
30
69°
56°
1
69°
54°
2
68°
55°
3
69°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Manitowoc
Manitowoc's September 2026 forecast shows daily high temperatures ranging from 68° to 87°, with overnight lows between 54° and 71°. The average high for September is 74° with an average low of 60°. 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 Manitowoc. See also: October | November | December.
