S
M
T
W
T
F
S
26
83°
65°
27
87°
71°
28
86°
71°
29
87°
67°
30
76°
64°
1
65°
53°
2
73°
52°
3
77°
46°
4
78°
50°
5
83°
56°
6
85°
72°
7
78°
64°
8
69°
64°
9
71°
65°
10
83°
65°
11
80°
66°
12
85°
66°
13
85°
64°
14
88°
60°
15
87°
62°
16
84°
67°
17
86°
65°
18
87°
72°
19
87°
71°
20
86°
70°
21
84°
73°
22
85°
72°
23
83°
71°
24
85°
71°
25
83°
72°
26
82°
71°
27
83°
70°
28
86°
70°
29
87°
69°
30
83°
69°
31
86°
68°
1
89°
67°
2
90°
69°
3
85°
69°
4
85°
68°
5
84°
69°
6
86°
70°
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 82° to 90°, with overnight lows between 67° and 73°. The average high for May is 85° with an average low of 70°. 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.