S
M
T
W
T
F
S
30
87°
67°
31
90°
68°
1
93°
70°
2
85°
65°
3
82°
65°
4
81°
67°
5
72°
61°
6
75°
55°
7
77°
52°
8
74°
55°
9
83°
60°
10
76°
53°
11
75°
52°
12
81°
55°
13
67°
46°
14
68°
43°
15
77°
55°
16
68°
54°
17
68°
58°
18
68°
58°
19
63°
56°
20
67°
54°
21
62°
53°
22
60°
52°
23
64°
53°
24
67°
53°
25
68°
55°
26
67°
57°
27
68°
55°
28
68°
56°
29
69°
56°
30
69°
54°
1
66°
48°
2
62°
54°
3
63°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sheboygan
Sheboygan's September 2026 forecast shows daily high temperatures ranging from 60° to 69°, with overnight lows between 48° and 58°. The average high for September is 66° 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 Sheboygan. See also: October | November | December.
