S
M
T
W
T
F
S
26
43°
34°
27
43°
36°
28
50°
36°
29
43°
28°
30
36°
25°
1
41°
23°
2
55°
23°
3
63°
34°
4
55°
34°
5
39°
28°
6
41°
28°
7
48°
25°
8
59°
21°
9
50°
34°
10
45°
27°
11
46°
27°
12
54°
34°
13
59°
34°
14
64°
28°
15
81°
37°
16
70°
39°
17
45°
36°
18
50°
37°
19
50°
37°
20
50°
30°
21
54°
28°
22
54°
36°
23
48°
39°
24
70°
34°
25
77°
41°
26
72°
54°
27
68°
39°
28
61°
44°
29
78°
47°
30
60°
44°
31
64°
42°
1
68°
42°
2
72°
51°
3
76°
49°
4
73°
51°
5
71°
50°
6
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Wing
Port Wing's May 2026 forecast shows daily high temperatures ranging from 60° to 78°, with overnight lows between 39° and 51°. The average high for May is 69° with an average low of 46°. 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 Wing. See also: June | July | August.