S
M
T
W
T
F
S
26
81°
55°
27
83°
46°
28
62°
44°
29
66°
45°
30
67°
45°
1
60°
41°
2
66°
45°
3
74°
49°
4
75°
53°
5
69°
48°
6
67°
47°
7
68°
47°
8
68°
51°
9
69°
52°
10
74°
53°
11
68°
57°
12
72°
49°
13
67°
48°
14
69°
49°
15
69°
49°
16
70°
53°
17
76°
58°
18
79°
59°
19
79°
60°
20
80°
60°
21
80°
59°
22
79°
61°
23
80°
61°
24
81°
62°
25
78°
61°
26
77°
58°
27
81°
60°
28
82°
61°
29
82°
62°
30
83°
63°
31
83°
63°
1
84°
64°
2
85°
64°
3
85°
65°
4
86°
65°
5
84°
64°
6
79°
65°
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 60° to 86°, with overnight lows between 41° and 65°. The average high for May is 75° with an average low of 55°. 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.