S
M
T
W
T
F
S
26
64°
45°
27
55°
42°
28
57°
40°
29
53°
32°
30
49°
28°
1
51°
32°
2
61°
44°
3
65°
49°
4
64°
34°
5
48°
30°
6
47°
30°
7
49°
33°
8
58°
37°
9
57°
38°
10
60°
44°
11
59°
44°
12
59°
42°
13
61°
43°
14
65°
44°
15
58°
42°
16
59°
43°
17
59°
49°
18
61°
48°
19
69°
50°
20
70°
52°
21
66°
47°
22
59°
43°
23
59°
42°
24
60°
43°
25
62°
47°
26
61°
49°
27
62°
48°
28
63°
46°
29
64°
50°
30
68°
48°
31
64°
49°
1
64°
52°
2
66°
50°
3
65°
50°
4
66°
51°
5
67°
49°
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 47° to 70°, with overnight lows between 30° and 52°. The average high for May is 61° 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.