S
M
T
W
T
F
S
30
84°
68°
31
87°
69°
1
88°
73°
2
89°
72°
3
79°
69°
4
88°
68°
5
77°
64°
6
75°
59°
7
78°
59°
8
77°
68°
9
79°
56°
10
73°
51°
11
77°
60°
12
76°
56°
13
72°
62°
14
74°
63°
15
69°
51°
16
66°
53°
17
70°
49°
18
66°
50°
19
68°
49°
20
65°
48°
21
66°
52°
22
67°
54°
23
70°
53°
24
74°
54°
25
75°
54°
26
73°
53°
27
73°
55°
28
75°
55°
29
74°
54°
30
73°
54°
1
71°
48°
2
66°
44°
3
60°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pewaukee
Pewaukee's September 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 41° and 68°. 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 Pewaukee. See also: October | November | December.
