S
M
T
W
T
F
S
26
81°
68°
27
79°
67°
28
80°
68°
29
78°
64°
30
78°
69°
31
79°
69°
1
82°
71°
2
79°
71°
3
84°
72°
4
84°
70°
5
80°
68°
6
78°
70°
7
84°
71°
8
83°
70°
9
84°
71°
10
82°
69°
11
78°
66°
12
80°
70°
13
83°
70°
14
78°
64°
15
75°
63°
16
75°
63°
17
77°
69°
18
77°
69°
19
78°
68°
20
80°
69°
21
82°
69°
22
77°
66°
23
77°
69°
24
78°
61°
25
77°
66°
26
83°
66°
27
82°
64°
28
80°
62°
29
74°
60°
30
73°
61°
31
75°
68°
1
77°
68°
2
75°
67°
3
79°
64°
4
76°
57°
5
74°
60°
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 73° to 84°, with overnight lows between 57° and 72°. The average high for August is 79° with an average low of 67°. 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.