S
M
T
W
T
F
S
26
67°
51°
27
66°
52°
28
68°
54°
29
65°
57°
30
66°
51°
31
65°
55°
1
70°
53°
2
69°
51°
3
66°
51°
4
63°
52°
5
65°
53°
6
66°
53°
7
65°
52°
8
64°
53°
9
65°
50°
10
61°
51°
11
62°
51°
12
62°
53°
13
63°
53°
14
64°
52°
15
66°
53°
16
64°
50°
17
66°
53°
18
65°
54°
19
64°
53°
20
63°
51°
21
63°
52°
22
62°
51°
23
63°
51°
24
64°
52°
25
67°
54°
26
68°
54°
27
68°
53°
28
67°
54°
29
65°
53°
30
64°
50°
31
61°
47°
1
62°
48°
2
63°
50°
3
65°
50°
4
63°
51°
5
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in McKinleyville
McKinleyville's August 2026 forecast shows daily high temperatures ranging from 61° to 70°, with overnight lows between 47° and 54°. The average high for August is 64° with an average low of 52°. 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 McKinleyville. See also: September | October | November.