S
M
T
W
T
F
S
26
65°
52°
27
71°
46°
28
64°
45°
29
76°
53°
30
74°
53°
1
68°
46°
2
58°
42°
3
66°
35°
4
80°
36°
5
82°
47°
6
75°
63°
7
66°
49°
8
71°
40°
9
75°
43°
10
84°
51°
11
63°
45°
12
73°
45°
13
79°
40°
14
67°
42°
15
77°
50°
16
85°
59°
17
91°
63°
18
93°
61°
19
92°
65°
20
92°
67°
21
77°
57°
22
75°
56°
23
77°
56°
24
78°
58°
25
81°
61°
26
82°
62°
27
85°
60°
28
83°
64°
29
85°
65°
30
84°
65°
31
83°
63°
1
79°
61°
2
79°
64°
3
80°
63°
4
79°
61°
5
81°
65°
6
87°
67°
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 67° to 93°, with overnight lows between 42° and 67°. The average high for May is 82° with an average low of 61°. 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.