S
M
T
W
T
F
S
28
80°
64°
29
85°
63°
30
87°
64°
1
93°
69°
2
97°
72°
3
97°
70°
4
94°
69°
5
81°
66°
6
71°
62°
7
79°
62°
8
83°
61°
9
86°
66°
10
86°
66°
11
85°
64°
12
81°
62°
13
83°
61°
14
82°
59°
15
85°
60°
16
86°
64°
17
87°
60°
18
82°
60°
19
86°
64°
20
81°
58°
21
79°
58°
22
80°
59°
23
80°
59°
24
83°
60°
25
83°
61°
26
86°
62°
27
84°
64°
28
86°
65°
29
86°
65°
30
85°
64°
31
85°
65°
1
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Arlington Heights
Arlington Heights's July 2026 forecast shows daily high temperatures ranging from 71° to 94°, with overnight lows between 58° and 69°. The average high for July is 83° with an average low of 62°. 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 Arlington Heights. See also: August | September | October.
