S
M
T
W
T
F
S
28
84°
63°
29
86°
58°
30
90°
56°
1
95°
71°
2
98°
74°
3
98°
78°
4
92°
71°
5
85°
65°
6
77°
66°
7
69°
62°
8
83°
58°
9
92°
65°
10
88°
65°
11
84°
61°
12
83°
55°
13
86°
59°
14
89°
68°
15
82°
61°
16
88°
55°
17
84°
55°
18
82°
56°
19
80°
54°
20
82°
50°
21
79°
59°
22
86°
66°
23
80°
55°
24
82°
58°
25
82°
55°
26
78°
59°
27
81°
61°
28
81°
65°
29
80°
61°
30
79°
62°
31
80°
62°
1
81°
62°
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 78° to 82°, with overnight lows between 55° and 65°. The average high for July is 80° with an average low of 60°. 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.
