S
M
T
W
T
F
S
26
66°
43°
27
68°
52°
28
66°
54°
29
55°
39°
30
57°
37°
1
48°
34°
2
55°
41°
3
64°
46°
4
75°
50°
5
54°
42°
6
50°
40°
7
52°
42°
8
60°
45°
9
61°
47°
10
60°
48°
11
60°
48°
12
64°
49°
13
64°
54°
14
66°
51°
15
73°
52°
16
72°
57°
17
71°
53°
18
66°
52°
19
72°
56°
20
70°
56°
21
70°
47°
22
66°
47°
23
65°
48°
24
67°
48°
25
67°
49°
26
68°
49°
27
67°
50°
28
68°
49°
29
69°
53°
30
70°
59°
31
74°
55°
1
71°
54°
2
74°
58°
3
76°
60°
4
78°
60°
5
79°
61°
6
81°
62°
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 50° to 81°, with overnight lows between 40° and 62°. The average high for May is 67° with an average low of 51°. 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.
