S
M
T
W
T
F
S
30
73°
55°
31
73°
56°
1
74°
55°
2
71°
54°
3
73°
54°
4
73°
55°
5
74°
57°
6
73°
58°
7
71°
56°
8
72°
55°
9
71°
52°
10
71°
52°
11
72°
53°
12
72°
54°
13
73°
53°
14
69°
55°
15
75°
59°
16
77°
60°
17
76°
59°
18
76°
50°
19
74°
49°
20
68°
49°
21
66°
55°
22
68°
57°
23
73°
57°
24
72°
56°
25
73°
47°
26
72°
45°
27
63°
46°
28
62°
47°
29
63°
47°
30
64°
51°
1
63°
52°
2
Hist. Avg.
63°
46°
3
Hist. Avg.
62°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cedarburg
Cedarburg's September 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 45° and 60°. The average high for September is 71° with an average low of 53°. 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 Cedarburg. See also: October | November | December.
