S
M
T
W
T
F
S
26
84°
68°
27
85°
73°
28
84°
73°
29
86°
71°
30
77°
70°
1
73°
60°
2
74°
54°
3
78°
54°
4
82°
58°
5
83°
70°
6
86°
70°
7
77°
61°
8
77°
60°
9
80°
66°
10
85°
69°
11
86°
68°
12
85°
70°
13
86°
69°
14
87°
70°
15
84°
67°
16
82°
69°
17
83°
70°
18
81°
70°
19
81°
69°
20
82°
71°
21
83°
69°
22
86°
65°
23
82°
66°
24
82°
67°
25
83°
70°
26
83°
67°
27
84°
67°
28
83°
68°
29
84°
72°
30
84°
72°
31
85°
73°
1
85°
73°
2
86°
72°
3
85°
73°
4
86°
74°
5
85°
74°
6
85°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hahnville
Hahnville's May 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 54° and 74°. The average high for May is 83° with an average low of 68°. 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 Hahnville. See also: June | July | August.