S
M
T
W
T
F
S
26
63°
28°
27
64°
37°
28
60°
41°
29
49°
36°
30
43°
32°
1
44°
32°
2
49°
27°
3
62°
32°
4
77°
41°
5
55°
36°
6
44°
26°
7
46°
34°
8
54°
43°
9
53°
34°
10
49°
33°
11
48°
34°
12
54°
37°
13
56°
38°
14
60°
41°
15
62°
43°
16
61°
43°
17
63°
44°
18
64°
42°
19
62°
44°
20
64°
43°
21
62°
42°
22
62°
40°
23
64°
42°
24
64°
42°
25
67°
45°
26
67°
46°
27
68°
46°
28
72°
48°
29
74°
50°
30
75°
51°
31
75°
51°
1
70°
49°
2
70°
52°
3
75°
52°
4
77°
53°
5
77°
53°
6
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hammond
Hammond's May 2026 forecast shows daily high temperatures ranging from 46° to 77°, with overnight lows between 33° and 53°. The average high for May is 64° with an average low of 44°. 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 Hammond. See also: June | July | August.