S
M
T
W
T
F
S
28
79°
65°
29
82°
66°
30
83°
65°
1
82°
66°
2
83°
67°
3
86°
67°
4
87°
68°
5
87°
68°
6
86°
69°
7
88°
69°
8
87°
68°
9
88°
70°
10
89°
69°
11
89°
68°
12
86°
69°
13
90°
70°
14
87°
69°
15
87°
68°
16
86°
69°
17
81°
60°
18
81°
63°
19
82°
66°
20
84°
67°
21
87°
62°
22
84°
61°
23
82°
63°
24
84°
66°
25
81°
62°
26
81°
60°
27
80°
61°
28
80°
61°
29
81°
63°
30
81°
62°
31
80°
64°
1
81°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Chicago Heights
Chicago Heights's July 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 60° and 70°. The average high for July is 84° with an average low of 66°. 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 Chicago Heights. See also: August | September | October.
