S
M
T
W
T
F
S
26
81°
58°
27
86°
63°
28
72°
57°
29
70°
52°
30
65°
44°
1
67°
45°
2
68°
43°
3
78°
39°
4
81°
58°
5
66°
46°
6
61°
45°
7
68°
40°
8
77°
46°
9
83°
53°
10
73°
54°
11
76°
48°
12
79°
48°
13
79°
57°
14
78°
48°
15
80°
56°
16
83°
69°
17
82°
69°
18
86°
71°
19
75°
62°
20
66°
60°
21
76°
58°
22
70°
61°
23
77°
63°
24
82°
61°
25
81°
61°
26
71°
63°
27
81°
64°
28
74°
65°
29
73°
62°
30
80°
62°
31
76°
55°
1
75°
56°
2
81°
59°
3
76°
58°
4
79°
58°
5
79°
60°
6
81°
64°
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 71° to 81°, with overnight lows between 55° and 65°. The average high for May is 77° with an average low of 61°. 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.