S
M
T
W
T
F
S
26
62°
50°
27
69°
43°
28
65°
42°
29
68°
55°
30
72°
53°
1
67°
40°
2
59°
46°
3
64°
40°
4
78°
43°
5
83°
56°
6
73°
63°
7
67°
46°
8
71°
42°
9
78°
47°
10
85°
55°
11
68°
41°
12
73°
41°
13
78°
48°
14
67°
49°
15
74°
45°
16
87°
53°
17
94°
64°
18
95°
68°
19
96°
70°
20
95°
69°
21
90°
58°
22
60°
55°
23
60°
54°
24
74°
58°
25
82°
67°
26
84°
68°
27
85°
67°
28
87°
53°
29
82°
57°
30
79°
49°
31
74°
56°
1
79°
52°
2
74°
50°
3
75°
53°
4
79°
59°
5
80°
63°
6
81°
63°
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 74° to 87°, with overnight lows between 49° and 63°. The average high for May is 79° with an average low of 56°. 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.
