S
M
T
W
T
F
S
26
83°
51°
27
82°
57°
28
79°
45°
29
74°
46°
30
79°
49°
1
N/A
2
72°
45°
3
75°
49°
4
77°
52°
5
68°
48°
6
58°
39°
7
69°
36°
8
66°
39°
9
67°
40°
10
72°
44°
11
77°
45°
12
77°
44°
13
73°
43°
14
68°
41°
15
64°
40°
16
65°
40°
17
66°
41°
18
67°
42°
19
68°
44°
20
70°
44°
21
70°
45°
22
69°
46°
23
70°
45°
24
70°
44°
25
64°
39°
26
63°
38°
27
64°
44°
28
69°
43°
29
62°
39°
30
63°
38°
31
63°
38°
1
67°
40°
2
66°
41°
3
68°
40°
4
68°
39°
5
66°
39°
6
67°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Glencoe
Glencoe's May 2026 forecast shows daily high temperatures ranging from 58° to 77°, with overnight lows between 36° and 52°. The average high for May is 68° with an average low of 42°. 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.