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
79°
71°
14
80°
69°
15
79°
71°
16
85°
70°
17
79°
66°
18
81°
65°
19
82°
67°
20
81°
65°
21
77°
64°
22
77°
67°
23
79°
66°
24
76°
65°
25
75°
65°
26
76°
64°
27
83°
69°
28
75°
64°
29
76°
66°
30
80°
68°
31
82°
68°
1
83°
69°
2
84°
68°
3
82°
67°
4
81°
67°
5
79°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Port Clinton
Port Clinton's August 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 64° and 71°. The average high for August is 80° 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 Port Clinton. See also: September | October | November.