S
M
T
W
T
F
S
28
81°
62°
29
92°
76°
30
94°
79°
1
95°
80°
2
95°
71°
3
88°
70°
4
83°
67°
5
76°
66°
6
80°
67°
7
85°
64°
8
89°
68°
9
87°
72°
10
81°
67°
11
82°
66°
12
85°
64°
13
92°
71°
14
96°
74°
15
94°
72°
16
91°
74°
17
93°
68°
18
90°
67°
19
90°
67°
20
85°
64°
21
87°
64°
22
83°
62°
23
85°
61°
24
86°
63°
25
85°
62°
26
90°
67°
27
85°
66°
28
86°
62°
29
80°
59°
30
78°
59°
31
81°
64°
1
85°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Glen Ellyn
Glen Ellyn's July 2026 forecast shows daily high temperatures ranging from 78° to 96°, with overnight lows between 59° and 74°. The average high for July is 87° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Glen Ellyn. See also: August | September | October.