S
M
T
W
T
F
S
26
60°
41°
27
53°
40°
28
54°
40°
29
50°
41°
30
52°
40°
1
62°
41°
2
58°
41°
3
61°
46°
4
57°
46°
5
57°
43°
6
58°
40°
7
63°
47°
8
60°
50°
9
66°
50°
10
68°
49°
11
68°
52°
12
67°
52°
13
70°
48°
14
61°
45°
15
62°
48°
16
66°
53°
17
72°
55°
18
73°
48°
19
63°
43°
20
60°
44°
21
62°
51°
22
65°
53°
23
69°
55°
24
74°
57°
25
75°
55°
26
70°
50°
27
63°
51°
28
64°
52°
29
65°
56°
30
67°
54°
31
69°
52°
1
68°
48°
2
67°
51°
3
72°
49°
4
70°
50°
5
73°
49°
6
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Great Lakes
Great Lakes's May 2026 forecast shows daily high temperatures ranging from 50° to 75°, with overnight lows between 40° and 57°. The average high for May is 64° 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 May weather will actually feel in Great Lakes. See also: June | July | August.
