S
M
T
W
T
F
S
26
58°
42°
27
55°
50°
28
54°
40°
29
62°
36°
30
68°
50°
1
56°
47°
2
64°
49°
3
82°
49°
4
61°
52°
5
59°
54°
6
57°
52°
7
59°
46°
8
59°
45°
9
70°
46°
10
62°
50°
11
68°
51°
12
65°
50°
13
60°
52°
14
57°
48°
15
55°
45°
16
56°
46°
17
61°
40°
18
60°
50°
19
61°
51°
20
62°
50°
21
66°
53°
22
63°
49°
23
61°
49°
24
62°
50°
25
59°
47°
26
62°
48°
27
61°
49°
28
60°
49°
29
63°
48°
30
65°
49°
31
63°
50°
1
65°
52°
2
68°
53°
3
67°
52°
4
65°
51°
5
61°
47°
6
66°
53°
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 59° to 68°, with overnight lows between 47° and 53°. The average high for May is 63° with an average low of 50°. 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.