S
M
T
W
T
F
S
30
94°
63°
31
96°
68°
1
97°
67°
2
98°
69°
3
100°
70°
4
100°
71°
5
95°
70°
6
84°
62°
7
87°
57°
8
90°
66°
9
93°
70°
10
79°
72°
11
79°
69°
12
80°
68°
13
86°
65°
14
84°
66°
15
91°
69°
16
91°
63°
17
86°
56°
18
80°
52°
19
76°
48°
20
72°
45°
21
76°
46°
22
77°
47°
23
79°
50°
24
77°
48°
25
81°
53°
26
81°
51°
27
80°
52°
28
81°
52°
29
80°
53°
30
78°
52°
1
73°
50°
2
74°
49°
3
78°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shelbyville
Shelbyville's September 2026 forecast shows daily high temperatures ranging from 72° to 91°, with overnight lows between 45° and 69°. The average high for September is 80° with an average low of 55°. 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 Shelbyville. See also: October | November | December.