S
M
T
W
T
F
S
26
59°
42°
27
68°
47°
28
64°
50°
29
57°
40°
30
56°
37°
1
50°
35°
2
57°
32°
3
68°
45°
4
80°
51°
5
61°
46°
6
58°
41°
7
60°
37°
8
67°
38°
9
75°
48°
10
65°
40°
11
56°
42°
12
72°
41°
13
59°
45°
14
67°
42°
15
75°
53°
16
84°
63°
17
87°
66°
18
79°
66°
19
79°
59°
20
59°
48°
21
58°
47°
22
66°
52°
23
72°
54°
24
77°
57°
25
83°
59°
26
84°
64°
27
83°
56°
28
74°
52°
29
81°
60°
30
77°
56°
31
75°
58°
1
76°
52°
2
81°
54°
3
80°
59°
4
82°
58°
5
78°
59°
6
82°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Glen Ellyn
Glen Ellyn's May 2026 forecast shows daily high temperatures ranging from 74° to 83°, with overnight lows between 52° and 60°. The average high for May is 79° with an average low of 56°. 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 Glen Ellyn. See also: June | July | August.
