S
M
T
W
T
F
S
26
66°
43°
27
68°
52°
28
66°
54°
29
55°
39°
30
57°
37°
1
48°
34°
2
55°
30°
3
66°
45°
4
84°
52°
5
59°
46°
6
61°
43°
7
61°
37°
8
66°
43°
9
77°
46°
10
63°
46°
11
55°
43°
12
75°
41°
13
55°
41°
14
64°
39°
15
75°
52°
16
86°
64°
17
88°
66°
18
82°
66°
19
82°
59°
20
61°
48°
21
63°
50°
22
66°
55°
23
66°
55°
24
73°
55°
25
84°
54°
26
84°
55°
27
82°
55°
28
64°
54°
29
78°
59°
30
69°
55°
31
68°
59°
1
71°
57°
2
74°
58°
3
77°
63°
4
82°
66°
5
80°
64°
6
73°
62°
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 68° to 82°, with overnight lows between 55° and 66°. The average high for May is 75° with an average low of 60°. 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.
