S
M
T
W
T
F
S
30
84°
68°
31
86°
70°
1
88°
71°
2
88°
69°
3
75°
69°
4
82°
68°
5
75°
63°
6
73°
57°
7
75°
57°
8
77°
68°
9
81°
56°
10
75°
53°
11
77°
61°
12
81°
54°
13
64°
44°
14
68°
63°
15
73°
57°
16
66°
59°
17
64°
59°
18
64°
59°
19
64°
60°
20
63°
55°
21
N/A
22
59°
52°
23
63°
52°
24
66°
52°
25
68°
51°
26
67°
53°
27
67°
53°
28
69°
54°
29
70°
52°
30
66°
53°
1
68°
53°
2
67°
47°
3
63°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wauwatosa
Wauwatosa's September 2026 forecast shows daily high temperatures ranging from 59° to 70°, with overnight lows between 47° and 54°. The average high for September is 66° with an average low of 52°. 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 Wauwatosa. See also: October | November | December.
