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
85°
65°
13
92°
65°
14
97°
71°
15
95°
74°
16
88°
72°
17
91°
72°
18
90°
69°
19
78°
64°
20
82°
61°
21
86°
66°
22
73°
58°
23
77°
54°
24
78°
60°
25
81°
60°
26
91°
72°
27
87°
70°
28
79°
63°
29
80°
61°
30
86°
67°
31
83°
67°
1
74°
66°
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 74° to 86°, with overnight lows between 66° and 67°. The average high for July is 81° with an average low of 67°. 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.
