S
M
T
W
T
F
S
26
82°
62°
27
82°
57°
28
79°
56°
29
80°
59°
30
82°
60°
31
81°
57°
1
83°
55°
2
79°
54°
3
79°
56°
4
80°
55°
5
79°
55°
6
79°
57°
7
80°
60°
8
79°
59°
9
78°
62°
10
79°
62°
11
79°
61°
12
80°
58°
13
83°
61°
14
85°
55°
15
78°
54°
16
79°
55°
17
83°
58°
18
83°
54°
19
79°
55°
20
78°
54°
21
77°
55°
22
80°
54°
23
77°
60°
24
77°
55°
25
78°
57°
26
82°
61°
27
83°
61°
28
83°
60°
29
84°
58°
30
84°
52°
31
76°
53°
1
77°
53°
2
76°
58°
3
81°
58°
4
80°
51°
5
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Indiana
Indiana's August 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 51° and 62°. The average high for August is 80° with an average low of 57°. 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 Indiana. See also: September | October | November.
