S
M
T
W
T
F
S
26
90°
65°
27
86°
66°
28
88°
65°
29
91°
66°
30
86°
70°
31
82°
65°
1
83°
58°
2
87°
61°
3
74°
57°
4
69°
52°
5
80°
48°
6
86°
57°
7
75°
52°
8
79°
49°
9
76°
55°
10
75°
51°
11
80°
58°
12
80°
59°
13
80°
59°
14
81°
57°
15
75°
63°
16
77°
54°
17
80°
51°
18
73°
48°
19
78°
45°
20
79°
62°
21
81°
56°
22
74°
53°
23
78°
46°
24
81°
59°
25
77°
63°
26
78°
57°
27
75°
51°
28
77°
50°
29
79°
62°
30
75°
65°
31
82°
53°
1
78°
55°
2
79°
58°
3
81°
62°
4
84°
64°
5
85°
64°
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 78° to 85°, with overnight lows between 53° and 64°. The average high for August is 82° with an average low of 59°. 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.