S
M
T
W
T
F
S
29
55°
28°
30
69°
42°
31
72°
54°
1
62°
37°
2
49°
37°
3
77°
45°
4
69°
40°
5
62°
34°
6
44°
32°
7
34°
22°
8
51°
19°
9
69°
40°
10
75°
40°
11
50°
33°
12
64°
30°
13
72°
56°
14
82°
51°
15
79°
48°
16
83°
59°
17
61°
49°
18
80°
46°
19
48°
34°
20
40°
24°
21
51°
45°
22
61°
39°
23
61°
40°
24
64°
45°
25
60°
43°
26
55°
42°
27
57°
41°
28
59°
43°
29
56°
42°
30
58°
40°
1
58°
44°
2
57°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Green Lakes State Park
Green Lakes State Park's April 2026 forecast shows daily high temperatures ranging from 40° to 64°, with overnight lows between 24° and 45°. The average high for April is 57° with an average low of 41°. 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 Lakes State Park. See also: May | June | July.