S
M
T
W
T
F
S
26
54°
51°
27
53°
47°
28
53°
50°
29
51°
48°
30
53°
50°
31
52°
49°
1
56°
51°
2
55°
51°
3
54°
50°
4
60°
50°
5
59°
50°
6
55°
52°
7
56°
51°
8
57°
52°
9
56°
53°
10
56°
53°
11
56°
51°
12
52°
48°
13
52°
49°
14
53°
49°
15
53°
49°
16
52°
49°
17
50°
44°
18
48°
45°
19
50°
47°
20
53°
52°
21
58°
55°
22
58°
54°
23
55°
54°
24
60°
56°
25
61°
57°
26
57°
47°
27
48°
47°
28
48°
47°
29
48°
46°
30
48°
47°
31
48°
47°
1
48°
47°
2
48°
47°
3
49°
47°
4
48°
46°
5
49°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Amchitka
Amchitka's August 2026 forecast shows daily high temperatures ranging from 48° to 61°, with overnight lows between 44° and 57°. The average high for August is 52° with an average low of 49°. 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 Amchitka. See also: September | October | November.