S
M
T
W
T
F
S
26
82°
66°
27
84°
70°
28
81°
68°
29
81°
68°
30
84°
63°
31
88°
66°
1
79°
70°
2
79°
70°
3
79°
63°
4
81°
59°
5
86°
63°
6
86°
70°
7
84°
70°
8
86°
70°
9
82°
61°
10
84°
70°
11
77°
66°
12
73°
66°
13
81°
66°
14
82°
70°
15
81°
68°
16
84°
72°
17
79°
70°
18
81°
66°
19
79°
70°
20
79°
64°
21
81°
59°
22
81°
66°
23
75°
63°
24
75°
55°
25
77°
57°
26
81°
63°
27
79°
66°
28
77°
63°
29
81°
57°
30
77°
68°
31
88°
73°
1
89°
73°
2
94°
74°
3
88°
68°
4
81°
69°
5
79°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Kelleys Island
Kelleys Island's August 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 67° and 74°. The average high for August is 87° with an average low of 71°. 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 Kelleys Island. See also: September | October | November.