S
M
T
W
T
F
S
26
86°
71°
27
86°
76°
28
86°
75°
29
85°
73°
30
88°
67°
1
68°
54°
2
76°
52°
3
79°
51°
4
80°
56°
5
81°
70°
6
85°
75°
7
79°
62°
8
75°
65°
9
85°
67°
10
87°
72°
11
82°
68°
12
85°
64°
13
88°
63°
14
88°
66°
15
85°
67°
16
86°
72°
17
85°
77°
18
86°
78°
19
88°
66°
20
76°
67°
21
79°
68°
22
89°
65°
23
78°
69°
24
82°
68°
25
89°
69°
26
87°
71°
27
79°
68°
28
87°
72°
29
88°
73°
30
86°
74°
31
87°
74°
1
93°
72°
2
86°
70°
3
85°
71°
4
86°
72°
5
87°
72°
6
88°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in West Port Arthur
West Port Arthur's May 2026 forecast shows daily high temperatures ranging from 79° to 93°, with overnight lows between 68° and 74°. The average high for May is 87° with an average low of 72°. 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 West Port Arthur. See also: June | July | August.
