S
M
T
W
T
F
S
30
95°
69°
31
95°
70°
1
99°
68°
2
97°
70°
3
99°
72°
4
100°
72°
5
99°
70°
6
97°
70°
7
90°
68°
8
93°
72°
9
93°
72°
10
95°
72°
11
95°
68°
12
93°
66°
13
95°
63°
14
95°
66°
15
99°
70°
16
97°
73°
17
99°
70°
18
99°
70°
19
99°
66°
20
96°
68°
21
94°
65°
22
85°
64°
23
80°
61°
24
80°
61°
25
82°
58°
26
81°
55°
27
78°
56°
28
79°
58°
29
81°
58°
30
80°
60°
1
77°
57°
2
79°
54°
3
78°
60°
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 77° to 99°, with overnight lows between 54° and 68°. The average high for September is 83° with an average low of 60°. 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.