S
M
T
W
T
F
S
30
82°
66°
31
82°
66°
1
81°
65°
2
77°
65°
3
81°
64°
4
81°
65°
5
80°
65°
6
81°
64°
7
82°
66°
8
81°
64°
9
78°
64°
10
79°
63°
11
80°
64°
12
76°
63°
13
78°
61°
14
67°
51°
15
68°
58°
16
70°
57°
17
69°
55°
18
68°
53°
19
73°
57°
20
75°
58°
21
75°
59°
22
74°
51°
23
74°
47°
24
69°
47°
25
70°
56°
26
71°
52°
27
66°
45°
28
67°
45°
29
62°
50°
30
67°
54°
1
64°
52°
2
68°
55°
3
70°
55°
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 62° to 82°, with overnight lows between 45° and 66°. The average high for September is 74° with an average low of 58°. 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.
