S
M
T
W
T
F
S
26
91°
71°
27
88°
68°
28
79°
68°
29
80°
64°
30
86°
63°
31
82°
71°
1
76°
66°
2
76°
66°
3
82°
63°
4
86°
68°
5
83°
70°
6
80°
69°
7
86°
69°
8
84°
70°
9
86°
67°
10
88°
73°
11
80°
68°
12
83°
69°
13
77°
70°
14
80°
71°
15
81°
72°
16
86°
72°
17
78°
67°
18
81°
66°
19
80°
66°
20
78°
65°
21
80°
62°
22
82°
66°
23
76°
61°
24
79°
58°
25
81°
61°
26
85°
69°
27
81°
65°
28
84°
66°
29
82°
66°
30
81°
72°
31
93°
75°
1
91°
73°
2
95°
73°
3
91°
73°
4
89°
72°
5
85°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Oak Lawn
Oak Lawn's August 2026 forecast shows daily high temperatures ranging from 81° to 95°, with overnight lows between 70° and 75°. The average high for August is 89° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Oak Lawn. See also: September | October | November.
