S
M
T
W
T
F
S
26
59°
40°
27
60°
44°
28
61°
47°
29
47°
36°
30
48°
32°
1
44°
31°
2
58°
29°
3
70°
41°
4
76°
42°
5
54°
35°
6
53°
32°
7
53°
32°
8
66°
33°
9
62°
38°
10
59°
32°
11
54°
28°
12
72°
35°
13
62°
38°
14
69°
34°
15
81°
50°
16
87°
57°
17
56°
47°
18
80°
50°
19
73°
51°
20
59°
44°
21
56°
36°
22
67°
48°
23
70°
52°
24
77°
54°
25
83°
54°
26
90°
57°
27
74°
50°
28
70°
46°
29
82°
56°
30
71°
48°
31
75°
52°
1
77°
51°
2
76°
53°
3
75°
55°
4
77°
58°
5
79°
58°
6
80°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Green Bay
Green Bay's May 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 46° and 59°. The average high for May is 77° with an average low of 54°. 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 Green Bay. See also: June | July | August.
