S
M
T
W
T
F
S
27
57°
52°
28
60°
43°
29
65°
44°
30
63°
47°
1
65°
51°
2
65°
53°
3
71°
55°
4
71°
55°
5
71°
55°
6
76°
53°
7
76°
53°
8
77°
53°
9
70°
56°
10
73°
56°
11
76°
55°
12
76°
55°
13
68°
54°
14
61°
45°
15
56°
47°
16
63°
49°
17
64°
50°
18
64°
51°
19
65°
50°
20
63°
50°
21
59°
49°
22
55°
49°
23
58°
48°
24
60°
49°
25
61°
49°
26
60°
48°
27
61°
49°
28
60°
47°
29
54°
48°
30
61°
48°
31
60°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mendocino
Mendocino's October 2026 forecast shows daily high temperatures ranging from 54° to 77°, with overnight lows between 45° and 56°. The average high for October is 65° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Mendocino. See also: November | December | January.