S
M
T
W
T
F
S
31
55°
43°
1
55°
42°
2
56°
45°
3
55°
45°
4
55°
47°
5
56°
47°
6
56°
46°
7
57°
47°
8
64°
45°
9
64°
42°
10
61°
43°
11
58°
46°
12
59°
45°
13
61°
46°
14
59°
48°
15
60°
48°
16
61°
49°
17
63°
48°
18
62°
49°
19
62°
49°
20
64°
48°
21
64°
51°
22
63°
47°
23
64°
50°
24
64°
48°
25
61°
49°
26
63°
48°
27
61°
49°
28
59°
49°
29
60°
48°
30
60°
49°
1
61°
48°
2
61°
49°
3
63°
45°
4
64°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mendocino
Mendocino's June 2026 forecast shows daily high temperatures ranging from 55° to 64°, with overnight lows between 42° and 51°. The average high for June is 60° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Mendocino. See also: July | August | September.