S
M
T
W
T
F
S
26
82°
76°
27
86°
76°
28
89°
76°
29
89°
72°
30
86°
68°
1
74°
58°
2
76°
56°
3
79°
54°
4
82°
60°
5
84°
72°
6
84°
71°
7
74°
67°
8
78°
66°
9
90°
71°
10
87°
67°
11
83°
67°
12
85°
64°
13
88°
63°
14
89°
62°
15
87°
71°
16
88°
70°
17
82°
78°
18
85°
78°
19
83°
79°
20
83°
76°
21
81°
77°
22
81°
74°
23
81°
74°
24
83°
76°
25
84°
75°
26
85°
75°
27
84°
76°
28
84°
76°
29
86°
75°
30
85°
76°
31
83°
77°
1
83°
78°
2
84°
78°
3
83°
77°
4
83°
77°
5
84°
79°
6
83°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port O Connor
Port O Connor's May 2026 forecast shows daily high temperatures ranging from 81° to 86°, with overnight lows between 74° and 79°. The average high for May is 83° with an average low of 77°. 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 O Connor. See also: June | July | August.