S
M
T
W
T
F
S
30
73°
56°
31
74°
63°
1
78°
64°
2
73°
65°
3
80°
64°
4
80°
55°
5
79°
59°
6
73°
54°
7
71°
56°
8
76°
61°
9
79°
61°
10
79°
60°
11
75°
55°
12
72°
60°
13
74°
57°
14
78°
52°
15
70°
59°
16
69°
57°
17
68°
58°
18
69°
51°
19
75°
50°
20
68°
56°
21
73°
50°
22
70°
55°
23
71°
52°
24
75°
56°
25
74°
56°
26
74°
55°
27
73°
58°
28
74°
54°
29
73°
47°
30
66°
54°
1
71°
55°
2
74°
48°
3
72°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Madison
South Madison's September 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 46° and 65°. The average high for September is 74° with an average low of 56°. 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 South Madison. See also: October | November | December.
