S
M
T
W
T
F
S
28
79°
63°
29
79°
64°
30
80°
65°
1
85°
70°
2
87°
71°
3
86°
71°
4
81°
65°
5
80°
64°
6
81°
67°
7
84°
71°
8
80°
71°
9
81°
70°
10
81°
69°
11
85°
66°
12
80°
66°
13
87°
63°
14
82°
63°
15
82°
64°
16
83°
65°
17
82°
69°
18
83°
71°
19
86°
70°
20
87°
69°
21
87°
65°
22
86°
65°
23
83°
67°
24
82°
67°
25
82°
72°
26
83°
68°
27
87°
71°
28
89°
72°
29
86°
73°
30
88°
68°
31
88°
64°
1
85°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Oak Lawn
Oak Lawn's July 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 63° and 73°. The average high for July is 84° with an average low of 68°. 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 Oak Lawn. See also: August | September | October.