S
M
T
W
T
F
S
26
82°
66°
27
82°
65°
28
86°
60°
29
82°
57°
30
81°
57°
31
80°
58°
1
82°
58°
2
81°
57°
3
82°
58°
4
81°
59°
5
81°
62°
6
83°
59°
7
79°
58°
8
79°
58°
9
80°
59°
10
79°
58°
11
84°
58°
12
83°
59°
13
83°
63°
14
86°
63°
15
85°
64°
16
85°
56°
17
82°
57°
18
79°
58°
19
78°
63°
20
83°
62°
21
85°
63°
22
84°
62°
23
84°
59°
24
82°
58°
25
77°
62°
26
80°
57°
27
78°
54°
28
Hist. Avg.
81°
63°
29
Hist. Avg.
81°
63°
30
Hist. Avg.
81°
63°
31
Hist. Avg.
80°
63°
1
Hist. Avg.
80°
62°
2
Hist. Avg.
80°
62°
3
Hist. Avg.
80°
62°
4
Hist. Avg.
80°
62°
5
Hist. Avg.
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Glendale Heights
Glendale Heights's August 2026 forecast shows daily high temperatures ranging from 77° to 86°, with overnight lows between 54° and 66°. The average high for August is 82° with an average low of 60°. 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 Glendale Heights. See also: September | October | November.
