S
M
T
W
T
F
S
26
92°
72°
27
86°
70°
28
80°
65°
29
80°
62°
30
87°
63°
31
81°
70°
1
71°
65°
2
77°
60°
3
81°
61°
4
84°
65°
5
81°
66°
6
78°
63°
7
84°
62°
8
84°
66°
9
86°
63°
10
85°
63°
11
81°
60°
12
82°
62°
13
81°
61°
14
83°
60°
15
77°
57°
16
78°
64°
17
87°
65°
18
87°
66°
19
86°
64°
20
82°
64°
21
85°
63°
22
85°
65°
23
86°
64°
24
82°
64°
25
82°
63°
26
83°
62°
27
81°
60°
28
78°
62°
29
81°
62°
30
82°
61°
31
83°
61°
1
82°
62°
2
79°
61°
3
80°
60°
4
80°
60°
5
82°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Glen Ellyn
Glen Ellyn's August 2026 forecast shows daily high temperatures ranging from 71° to 87°, with overnight lows between 57° and 66°. The average high for August is 82° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Glen Ellyn. See also: September | October | November.
