S
M
T
W
T
F
S
30
77°
51°
31
75°
49°
1
73°
53°
2
72°
51°
3
74°
51°
4
73°
50°
5
71°
50°
6
71°
53°
7
70°
51°
8
72°
50°
9
72°
49°
10
71°
49°
11
70°
50°
12
70°
49°
13
72°
51°
14
71°
50°
15
74°
54°
16
77°
53°
17
78°
54°
18
77°
52°
19
68°
48°
20
75°
52°
21
71°
52°
22
Hist. Avg.
70°
47°
23
Hist. Avg.
70°
46°
24
Hist. Avg.
69°
46°
25
Hist. Avg.
69°
46°
26
Hist. Avg.
68°
45°
27
Hist. Avg.
68°
45°
28
Hist. Avg.
67°
44°
29
Hist. Avg.
67°
44°
30
Hist. Avg.
66°
43°
1
Hist. Avg.
66°
43°
2
Hist. Avg.
66°
43°
3
Hist. Avg.
65°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mukwonago Town
Mukwonago Town's September 2026 forecast shows daily high temperatures ranging from 68° to 78°, with overnight lows between 48° and 54°. The average high for September is 73° with an average low of 51°. 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 Mukwonago Town. See also: October | November | December.
