S
M
T
W
T
F
S
27
76°
49°
28
78°
50°
29
79°
54°
30
82°
60°
1
87°
66°
2
76°
53°
3
71°
48°
4
78°
48°
5
71°
47°
6
72°
50°
7
83°
50°
8
79°
51°
9
83°
51°
10
73°
56°
11
73°
58°
12
87°
52°
13
88°
66°
14
77°
66°
15
73°
53°
16
59°
41°
17
56°
37°
18
63°
40°
19
67°
45°
20
69°
43°
21
70°
46°
22
68°
47°
23
69°
46°
24
64°
45°
25
62°
44°
26
61°
42°
27
62°
45°
28
63°
39°
29
52°
36°
30
56°
44°
31
53°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Indianapolis
Indianapolis's October 2026 forecast shows daily high temperatures ranging from 52° to 73°, with overnight lows between 36° and 53°. The average high for October is 63° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Indianapolis. See also: November | December | January.
