S
M
T
W
T
F
S
26
85°
66°
27
80°
63°
28
78°
62°
29
77°
59°
30
77°
65°
31
78°
64°
1
81°
64°
2
83°
65°
3
84°
66°
4
84°
64°
5
79°
61°
6
77°
60°
7
83°
64°
8
84°
63°
9
81°
65°
10
83°
63°
11
77°
59°
12
81°
62°
13
82°
64°
14
81°
58°
15
75°
57°
16
75°
57°
17
76°
62°
18
76°
64°
19
77°
64°
20
76°
63°
21
79°
63°
22
76°
62°
23
75°
63°
24
79°
55°
25
79°
62°
26
83°
62°
27
81°
61°
28
82°
59°
29
73°
55°
30
73°
54°
31
74°
61°
1
79°
62°
2
72°
62°
3
81°
61°
4
80°
54°
5
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Geauga Lake
Geauga Lake's August 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 54° and 66°. The average high for August is 79° with an average low of 61°. 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 Geauga Lake. See also: September | October | November.