S
M
T
W
T
F
S
26
66°
42°
27
62°
48°
28
63°
45°
29
51°
34°
30
49°
29°
1
47°
26°
2
62°
24°
3
72°
45°
4
78°
36°
5
55°
36°
6
51°
33°
7
56°
32°
8
64°
42°
9
68°
35°
10
55°
36°
11
58°
40°
12
53°
41°
13
64°
44°
14
68°
48°
15
71°
48°
16
65°
46°
17
65°
46°
18
67°
48°
19
70°
47°
20
63°
42°
21
64°
43°
22
62°
43°
23
63°
45°
24
64°
46°
25
65°
49°
26
68°
46°
27
71°
49°
28
73°
50°
29
75°
53°
30
76°
55°
31
76°
56°
1
74°
53°
2
73°
57°
3
77°
57°
4
78°
58°
5
78°
55°
6
68°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Green Lake
Green Lake's May 2026 forecast shows daily high temperatures ranging from 51° to 78°, with overnight lows between 32° and 58°. The average high for May is 67° with an average low of 47°. 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 Lake. See also: June | July | August.