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
67°
54°
18
69°
59°
19
64°
58°
20
65°
54°
21
60°
53°
22
60°
48°
23
67°
52°
24
68°
51°
25
66°
50°
26
70°
51°
27
69°
53°
28
70°
51°
29
68°
49°
30
67°
45°
1
71°
50°
2
62°
50°
3
61°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Menomonee Falls
Menomonee Falls's September 2026 forecast shows daily high temperatures ranging from 60° to 71°, with overnight lows between 45° and 59°. 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 Menomonee Falls. See also: October | November | December.
