S
M
T
W
T
F
S
29
64°
41°
30
82°
55°
31
70°
39°
1
45°
39°
2
75°
39°
3
57°
39°
4
59°
43°
5
54°
39°
6
54°
36°
7
37°
30°
8
72°
37°
9
70°
46°
10
52°
37°
11
59°
34°
12
82°
57°
13
82°
66°
14
84°
57°
15
75°
61°
16
73°
46°
17
84°
45°
18
63°
41°
19
54°
36°
20
49°
46°
21
75°
51°
22
63°
56°
23
80°
61°
24
69°
48°
25
55°
45°
26
54°
48°
27
58°
46°
28
52°
44°
29
55°
44°
30
58°
48°
1
61°
46°
2
56°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Green Bay
Green Bay's April 2026 forecast shows daily high temperatures ranging from 49° to 80°, with overnight lows between 44° and 61°. The average high for April is 60° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Green Bay. See also: May | June | July.