S
M
T
W
T
F
S
26
106°
78°
27
107°
78°
28
99°
75°
29
94°
76°
30
98°
78°
31
93°
69°
1
90°
64°
2
93°
58°
3
97°
62°
4
98°
70°
5
87°
67°
6
91°
71°
7
101°
71°
8
107°
77°
9
105°
76°
10
105°
75°
11
104°
73°
12
99°
71°
13
97°
70°
14
97°
73°
15
98°
69°
16
100°
71°
17
96°
70°
18
90°
66°
19
95°
72°
20
94°
72°
21
95°
73°
22
95°
72°
23
94°
71°
24
94°
72°
25
95°
70°
26
91°
69°
27
93°
70°
28
94°
71°
29
94°
69°
30
93°
70°
31
93°
70°
1
92°
69°
2
92°
70°
3
91°
70°
4
92°
69°
5
92°
69°
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 87° to 107°, with overnight lows between 66° and 77°. The average high for August is 96° with an average low of 71°. 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.
