S
M
T
W
T
F
S
26
83°
69°
27
84°
68°
28
84°
68°
29
79°
65°
30
77°
65°
31
80°
70°
1
84°
71°
2
86°
72°
3
84°
72°
4
86°
70°
5
80°
69°
6
81°
71°
7
86°
70°
8
79°
71°
9
85°
69°
10
78°
66°
11
80°
68°
12
82°
71°
13
84°
68°
14
80°
64°
15
77°
63°
16
78°
67°
17
78°
69°
18
81°
70°
19
84°
66°
20
84°
70°
21
85°
66°
22
76°
63°
23
82°
70°
24
78°
68°
25
84°
66°
26
84°
68°
27
83°
60°
28
77°
59°
29
73°
58°
30
75°
61°
31
76°
65°
1
75°
67°
2
80°
60°
3
75°
57°
4
73°
58°
5
72°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Stony Island
Stony Island's August 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 57° and 72°. The average high for August is 80° 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 August weather will actually feel in Stony Island. See also: September | October | November.