S
M
T
W
T
F
S
28
78°
52°
29
82°
63°
30
79°
64°
1
76°
49°
2
79°
47°
3
85°
56°
4
86°
49°
5
82°
51°
6
91°
57°
7
93°
59°
8
83°
47°
9
82°
50°
10
83°
53°
11
85°
54°
12
82°
53°
13
84°
55°
14
88°
58°
15
89°
60°
16
97°
65°
17
76°
52°
18
78°
53°
19
83°
55°
20
84°
55°
21
82°
57°
22
80°
57°
23
83°
58°
24
79°
58°
25
78°
57°
26
78°
58°
27
79°
58°
28
78°
55°
29
79°
54°
30
80°
56°
31
83°
60°
1
81°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Willowbrook
Willowbrook's July 2026 forecast shows daily high temperatures ranging from 76° to 97°, with overnight lows between 47° and 65°. The average high for July is 83° with an average low of 56°. 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 Willowbrook. See also: August | September | October.