S
M
T
W
T
F
S
26
87°
69°
27
90°
69°
28
84°
66°
29
82°
62°
30
85°
63°
31
84°
65°
1
77°
69°
2
80°
66°
3
82°
64°
4
84°
60°
5
84°
61°
6
80°
67°
7
88°
66°
8
88°
72°
9
89°
70°
10
90°
75°
11
87°
67°
12
73°
66°
13
86°
71°
14
87°
73°
15
91°
73°
16
89°
70°
17
81°
61°
18
82°
63°
19
86°
67°
20
83°
65°
21
80°
62°
22
80°
63°
23
85°
64°
24
82°
65°
25
81°
64°
26
79°
63°
27
85°
68°
28
78°
59°
29
78°
60°
30
81°
61°
31
85°
66°
1
86°
67°
2
87°
67°
3
86°
66°
4
85°
65°
5
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Indianapolis Motor Speedway
Indianapolis Motor Speedway's August 2026 forecast shows daily high temperatures ranging from 78° to 91°, with overnight lows between 59° and 73°. The average high for August is 84° with an average low of 65°. 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 Motor Speedway. See also: September | October | November.
