S
M
T
W
T
F
S
28
85°
68°
29
86°
67°
30
81°
60°
1
76°
60°
2
77°
62°
3
79°
67°
4
79°
65°
5
85°
69°
6
86°
60°
7
80°
66°
8
82°
68°
9
81°
61°
10
80°
60°
11
79°
60°
12
80°
61°
13
81°
62°
14
81°
62°
15
82°
61°
16
80°
61°
17
81°
62°
18
82°
63°
19
82°
68°
20
84°
69°
21
87°
64°
22
86°
64°
23
87°
67°
24
87°
62°
25
80°
61°
26
82°
66°
27
82°
69°
28
86°
70°
29
87°
68°
30
85°
69°
31
87°
70°
1
87°
70°
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 76° to 87°, with overnight lows between 60° and 70°. The average high for July is 83° with an average low of 65°. 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.
