S
M
T
W
T
F
S
26
83°
66°
27
84°
65°
28
84°
66°
29
85°
66°
30
84°
67°
31
85°
71°
1
88°
72°
2
89°
72°
3
89°
71°
4
90°
72°
5
89°
65°
6
84°
65°
7
81°
66°
8
82°
65°
9
83°
66°
10
83°
66°
11
86°
68°
12
85°
70°
13
86°
71°
14
87°
70°
15
86°
71°
16
88°
70°
17
88°
70°
18
85°
67°
19
83°
65°
20
81°
65°
21
81°
70°
22
82°
70°
23
81°
65°
24
84°
67°
25
84°
69°
26
86°
64°
27
85°
64°
28
82°
68°
29
79°
69°
30
85°
68°
31
85°
69°
1
86°
68°
2
85°
69°
3
86°
66°
4
85°
61°
5
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Willowbrook
Willowbrook's August 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 61° and 72°. The average high for August is 85° with an average low of 68°. 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 Willowbrook. See also: September | October | November.
