S
M
T
W
T
F
S
26
84°
67°
27
80°
66°
28
80°
62°
29
81°
65°
30
83°
68°
31
85°
68°
1
83°
67°
2
82°
67°
3
88°
62°
4
81°
60°
5
81°
62°
6
82°
60°
7
81°
59°
8
82°
60°
9
81°
58°
10
81°
60°
11
83°
66°
12
87°
67°
13
87°
61°
14
84°
59°
15
81°
63°
16
81°
65°
17
83°
59°
18
81°
61°
19
81°
59°
20
82°
59°
21
83°
62°
22
86°
65°
23
87°
65°
24
88°
64°
25
87°
65°
26
88°
63°
27
87°
64°
28
86°
63°
29
86°
63°
30
83°
57°
31
80°
54°
1
79°
55°
2
79°
56°
3
80°
57°
4
79°
55°
5
79°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Shelbyville
Shelbyville's August 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 54° and 68°. The average high for August is 83° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Shelbyville. See also: September | October | November.