S
M
T
W
T
F
S
26
60°
46°
27
70°
45°
28
60°
49°
29
62°
53°
30
70°
50°
1
67°
45°
2
60°
40°
3
61°
44°
4
72°
55°
5
85°
62°
6
72°
60°
7
67°
43°
8
64°
44°
9
62°
47°
10
68°
50°
11
67°
50°
12
66°
49°
13
69°
53°
14
71°
54°
15
74°
52°
16
77°
55°
17
76°
56°
18
78°
56°
19
77°
55°
20
78°
56°
21
78°
56°
22
75°
49°
23
69°
48°
24
69°
49°
25
70°
50°
26
71°
50°
27
71°
49°
28
72°
50°
29
71°
50°
30
71°
53°
31
74°
59°
1
77°
57°
2
73°
54°
3
74°
56°
4
77°
59°
5
78°
57°
6
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Glencoe
Glencoe's May 2026 forecast shows daily high temperatures ranging from 60° to 85°, with overnight lows between 40° and 62°. The average high for May is 72° with an average low of 52°. 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 Glencoe. See also: June | July | August.