S
M
T
W
T
F
S
30
71°
55°
31
70°
54°
1
71°
55°
2
69°
53°
3
69°
54°
4
74°
60°
5
74°
57°
6
69°
59°
7
69°
53°
8
71°
52°
9
69°
59°
10
72°
61°
11
74°
58°
12
74°
58°
13
66°
52°
14
67°
52°
15
65°
49°
16
64°
50°
17
62°
56°
18
66°
53°
19
65°
57°
20
66°
48°
21
67°
47°
22
61°
45°
23
Hist. Avg.
65°
50°
24
Hist. Avg.
64°
50°
25
Hist. Avg.
64°
50°
26
Hist. Avg.
63°
49°
27
Hist. Avg.
63°
49°
28
Hist. Avg.
62°
48°
29
Hist. Avg.
62°
48°
30
Hist. Avg.
62°
48°
1
Hist. Avg.
61°
47°
2
Hist. Avg.
61°
47°
3
Hist. Avg.
60°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Manitowoc
Manitowoc's September 2026 forecast shows daily high temperatures ranging from 61° to 74°, with overnight lows between 45° and 61°. The average high for September is 69° with an average low of 54°. 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.
