S
M
T
W
T
F
S
26
80°
61°
27
81°
59°
28
78°
60°
29
80°
61°
30
77°
57°
1
77°
57°
2
78°
59°
3
80°
62°
4
82°
62°
5
82°
61°
6
81°
60°
7
83°
63°
8
84°
63°
9
85°
62°
10
85°
64°
11
84°
64°
12
85°
65°
13
81°
65°
14
80°
64°
15
87°
63°
16
87°
65°
17
86°
65°
18
87°
64°
19
88°
61°
20
83°
62°
21
88°
65°
22
89°
66°
23
89°
61°
24
88°
61°
25
83°
62°
26
86°
65°
27
85°
66°
28
84°
68°
29
88°
66°
30
90°
68°
31
91°
68°
1
91°
69°
2
92°
65°
3
91°
65°
4
91°
66°
5
89°
65°
6
91°
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 77° to 92°, with overnight lows between 57° and 69°. The average high for May is 85° with an average low of 63°. 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.