S
M
T
W
T
F
S
26
65°
56°
27
63°
52°
28
64°
54°
29
64°
50°
30
66°
51°
31
67°
47°
1
67°
47°
2
65°
48°
3
67°
47°
4
68°
46°
5
65°
48°
6
66°
46°
7
67°
48°
8
65°
49°
9
63°
51°
10
60°
48°
11
61°
47°
12
60°
45°
13
62°
45°
14
64°
44°
15
59°
44°
16
61°
46°
17
61°
49°
18
62°
48°
19
63°
49°
20
62°
48°
21
58°
42°
22
61°
47°
23
64°
48°
24
64°
45°
25
57°
47°
26
61°
49°
27
61°
47°
28
62°
47°
29
62°
48°
30
63°
46°
31
63°
46°
1
62°
44°
2
61°
35°
3
60°
43°
4
58°
41°
5
54°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Koyuk
Koyuk's August 2026 forecast shows daily high temperatures ranging from 54° to 68°, with overnight lows between 35° and 56°. The average high for August is 63° 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 August weather will actually feel in Koyuk. See also: September | October | November.