S
M
T
W
T
F
S
26
82°
61°
27
83°
62°
28
84°
65°
29
84°
67°
30
85°
63°
31
89°
65°
1
89°
68°
2
90°
68°
3
89°
67°
4
89°
64°
5
87°
61°
6
83°
61°
7
82°
62°
8
82°
62°
9
83°
63°
10
86°
62°
11
86°
63°
12
88°
62°
13
89°
64°
14
88°
67°
15
90°
66°
16
89°
67°
17
88°
67°
18
85°
61°
19
83°
60°
20
83°
66°
21
84°
67°
22
84°
65°
23
82°
61°
24
83°
66°
25
83°
67°
26
89°
62°
27
85°
67°
28
87°
67°
29
89°
66°
30
88°
65°
31
87°
64°
1
86°
63°
2
86°
63°
3
84°
62°
4
87°
64°
5
86°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mentor
Mentor's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 60° and 68°. The average high for August is 86° with an average low of 64°. 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 Mentor. See also: September | October | November.