S
M
T
W
T
F
S
26
56°
31°
27
44°
35°
28
47°
29°
29
46°
28°
30
47°
26°
1
54°
25°
2
67°
32°
3
72°
33°
4
60°
30°
5
40°
31°
6
42°
30°
7
58°
26°
8
66°
31°
9
56°
37°
10
53°
31°
11
65°
32°
12
65°
39°
13
73°
34°
14
78°
55°
15
78°
48°
16
55°
38°
17
54°
43°
18
52°
38°
19
49°
34°
20
63°
48°
21
65°
45°
22
64°
45°
23
71°
51°
24
71°
49°
25
70°
50°
26
73°
54°
27
72°
54°
28
74°
53°
29
77°
52°
30
72°
48°
31
74°
54°
1
74°
54°
2
67°
53°
3
71°
51°
4
72°
55°
5
74°
55°
6
71°
52°
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 49° to 77°, with overnight lows between 34° and 55°. The average high for May is 68° with an average low of 49°. 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.
