S
M
T
W
T
F
S
28
80°
61°
29
93°
73°
30
94°
79°
1
95°
80°
2
94°
72°
3
87°
70°
4
83°
66°
5
75°
66°
6
79°
65°
7
85°
62°
8
89°
64°
9
86°
70°
10
80°
66°
11
80°
63°
12
87°
63°
13
93°
70°
14
97°
72°
15
94°
69°
16
92°
74°
17
89°
71°
18
90°
69°
19
87°
68°
20
82°
65°
21
82°
64°
22
80°
63°
23
82°
64°
24
83°
64°
25
82°
63°
26
88°
69°
27
82°
66°
28
83°
63°
29
77°
60°
30
76°
60°
31
79°
65°
1
83°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Vernon Hills
Vernon Hills's July 2026 forecast shows daily high temperatures ranging from 76° to 97°, with overnight lows between 60° and 74°. The average high for July is 85° with an average low of 66°. 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 Vernon Hills. See also: August | September | October.
