S
M
T
W
T
F
S
26
69°
50°
27
69°
54°
28
67°
57°
29
64°
46°
30
61°
38°
1
55°
43°
2
54°
39°
3
64°
36°
4
75°
51°
5
64°
47°
6
58°
44°
7
62°
37°
8
66°
48°
9
75°
50°
10
68°
53°
11
72°
45°
12
76°
44°
13
66°
48°
14
66°
40°
15
69°
47°
16
75°
58°
17
83°
62°
18
84°
67°
19
86°
58°
20
69°
51°
21
71°
53°
22
66°
64°
23
75°
61°
24
75°
61°
25
76°
63°
26
78°
62°
27
79°
61°
28
77°
61°
29
77°
62°
30
78°
63°
31
78°
62°
1
79°
58°
2
80°
61°
3
74°
57°
4
72°
54°
5
73°
56°
6
77°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Indianapolis
Indianapolis's May 2026 forecast shows daily high temperatures ranging from 66° to 86°, with overnight lows between 51° and 64°. The average high for May is 76° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Indianapolis. See also: June | July | August.
