S
M
T
W
T
F
S
28
91°
80°
29
91°
79°
30
92°
76°
1
92°
76°
2
93°
77°
3
94°
77°
4
94°
78°
5
93°
79°
6
92°
78°
7
95°
79°
8
94°
78°
9
95°
77°
10
95°
77°
11
96°
79°
12
94°
77°
13
95°
77°
14
86°
78°
15
94°
77°
16
95°
78°
17
95°
76°
18
95°
78°
19
94°
78°
20
96°
76°
21
96°
78°
22
95°
78°
23
96°
77°
24
96°
78°
25
95°
78°
26
96°
77°
27
96°
78°
28
95°
78°
29
96°
77°
30
97°
78°
31
97°
78°
1
98°
77°
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 86° to 98°, with overnight lows between 76° and 79°. The average high for July is 95° with an average low of 78°. 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.
