S
M
T
W
T
F
S
28
83°
64°
29
91°
75°
30
93°
75°
1
93°
75°
2
94°
74°
3
92°
68°
4
89°
67°
5
75°
67°
6
77°
68°
7
83°
63°
8
87°
63°
9
87°
69°
10
81°
70°
11
79°
69°
12
83°
63°
13
90°
63°
14
95°
72°
15
96°
74°
16
93°
72°
17
88°
72°
18
87°
71°
19
85°
67°
20
85°
64°
21
80°
62°
22
77°
60°
23
76°
59°
24
82°
63°
25
81°
64°
26
85°
65°
27
84°
64°
28
85°
64°
29
79°
61°
30
77°
60°
31
80°
66°
1
84°
67°
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 76° to 96°, with overnight lows between 59° and 74°. 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.
