S
M
T
W
T
F
S
30
80°
60°
31
80°
60°
1
79°
59°
2
76°
60°
3
79°
60°
4
78°
59°
5
79°
59°
6
80°
58°
7
81°
60°
8
81°
59°
9
77°
58°
10
76°
57°
11
79°
58°
12
78°
58°
13
79°
55°
14
68°
46°
15
67°
50°
16
68°
52°
17
70°
50°
18
67°
48°
19
71°
50°
20
75°
53°
21
75°
53°
22
74°
50°
23
73°
42°
24
67°
43°
25
68°
51°
26
71°
51°
27
68°
41°
28
70°
40°
29
62°
44°
30
66°
49°
1
65°
48°
2
67°
50°
3
71°
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 62° to 81°, with overnight lows between 40° and 60°. The average high for September is 73° 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 Menomonee Falls. See also: October | November | December.
