S
M
T
W
T
F
S
26
48°
40°
27
47°
42°
28
53°
35°
29
58°
32°
30
54°
32°
1
55°
32°
2
69°
37°
3
73°
49°
4
61°
41°
5
50°
32°
6
51°
35°
7
65°
35°
8
75°
46°
9
61°
39°
10
63°
36°
11
76°
31°
12
74°
52°
13
79°
42°
14
80°
53°
15
87°
54°
16
79°
48°
17
80°
50°
18
58°
45°
19
54°
37°
20
64°
33°
21
69°
41°
22
55°
48°
23
71°
51°
24
84°
60°
25
88°
64°
26
85°
64°
27
87°
59°
28
82°
60°
29
79°
57°
30
74°
55°
31
78°
56°
1
80°
57°
2
80°
56°
3
81°
56°
4
80°
60°
5
75°
54°
6
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gary
Gary's May 2026 forecast shows daily high temperatures ranging from 71° to 88°, with overnight lows between 51° and 64°. The average high for May is 80° with an average low of 58°. 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 Gary. See also: June | July | August.
