S
M
T
W
T
F
S
26
83°
64°
27
81°
64°
28
84°
66°
29
83°
64°
30
85°
63°
1
83°
65°
2
82°
62°
3
82°
66°
4
83°
67°
5
82°
65°
6
81°
63°
7
82°
66°
8
83°
67°
9
79°
67°
10
80°
67°
11
82°
68°
12
82°
65°
13
81°
63°
14
83°
65°
15
80°
64°
16
83°
66°
17
83°
70°
18
84°
69°
19
84°
66°
20
84°
66°
21
85°
68°
22
N/A
23
79°
69°
24
79°
70°
25
81°
69°
26
79°
70°
27
80°
68°
28
81°
67°
29
79°
67°
30
82°
67°
31
80°
66°
1
81°
66°
2
82°
67°
3
83°
68°
4
81°
69°
5
82°
68°
6
80°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Port Allen
Port Allen's May 2026 forecast shows daily high temperatures ranging from 79° to 83°, with overnight lows between 66° and 70°. The average high for May is 81° 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 Port Allen. See also: June | July | August.
