S
M
T
W
T
F
S
26
80°
63°
27
79°
62°
28
80°
63°
29
81°
67°
30
83°
64°
1
84°
67°
2
84°
66°
3
81°
62°
4
83°
67°
5
84°
68°
6
84°
69°
7
83°
69°
8
84°
68°
9
85°
69°
10
85°
69°
11
80°
68°
12
85°
64°
13
80°
67°
14
81°
70°
15
81°
70°
16
83°
71°
17
86°
72°
18
86°
71°
19
81°
71°
20
82°
72°
21
84°
73°
22
87°
73°
23
85°
72°
24
87°
73°
25
86°
73°
26
86°
72°
27
87°
73°
28
86°
71°
29
87°
70°
30
86°
70°
31
90°
69°
1
89°
73°
2
91°
69°
3
90°
70°
4
91°
70°
5
92°
71°
6
91°
71°
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 92°, with overnight lows between 62° and 73°. The average high for May is 85° with an average low of 69°. 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.
