S
M
T
W
T
F
S
26
81°
60°
27
79°
60°
28
79°
61°
29
80°
61°
30
80°
60°
31
79°
59°
1
79°
60°
2
80°
62°
3
81°
61°
4
81°
63°
5
80°
62°
6
81°
62°
7
82°
61°
8
85°
65°
9
87°
67°
10
86°
62°
11
83°
60°
12
80°
62°
13
81°
61°
14
81°
61°
15
80°
64°
16
81°
59°
17
Hist. Avg.
84°
65°
18
Hist. Avg.
84°
65°
19
Hist. Avg.
84°
65°
20
Hist. Avg.
84°
65°
21
Hist. Avg.
84°
65°
22
Hist. Avg.
84°
65°
23
Hist. Avg.
84°
64°
24
Hist. Avg.
84°
64°
25
Hist. Avg.
84°
64°
26
Hist. Avg.
84°
64°
27
Hist. Avg.
84°
64°
28
Hist. Avg.
83°
64°
29
Hist. Avg.
83°
63°
30
Hist. Avg.
83°
63°
31
Hist. Avg.
83°
63°
1
Hist. Avg.
83°
62°
2
Hist. Avg.
82°
62°
3
Hist. Avg.
82°
62°
4
Hist. Avg.
82°
62°
5
Hist. Avg.
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Indianapolis
Indianapolis's August 2026 forecast shows daily high temperatures ranging from 79° to 87°, with overnight lows between 59° and 67°. The average high for August is 81° 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 Indianapolis. See also: September | October | November.
