S
M
T
W
T
F
S
26
66°
59°
27
66°
54°
28
66°
53°
29
63°
50°
30
65°
46°
31
64°
46°
1
72°
54°
2
70°
52°
3
70°
50°
4
66°
54°
5
67°
52°
6
70°
48°
7
74°
53°
8
73°
52°
9
71°
50°
10
67°
52°
11
63°
51°
12
64°
50°
13
65°
51°
14
62°
47°
15
59°
50°
16
60°
49°
17
59°
49°
18
59°
50°
19
60°
47°
20
58°
49°
21
60°
50°
22
60°
50°
23
59°
49°
24
62°
50°
25
61°
50°
26
62°
51°
27
61°
51°
28
61°
50°
29
60°
49°
30
59°
50°
31
60°
48°
1
58°
49°
2
61°
50°
3
63°
50°
4
59°
49°
5
59°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mendocino
Mendocino's August 2026 forecast shows daily high temperatures ranging from 58° to 74°, with overnight lows between 47° and 54°. The average high for August is 63° with an average low of 50°. 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 Mendocino. See also: September | October | November.
