S
M
T
W
T
F
S
26
46°
46°
27
47°
46°
28
48°
45°
29
47°
46°
30
47°
46°
31
48°
46°
1
47°
47°
2
47°
46°
3
48°
46°
4
47°
46°
5
48°
46°
6
48°
47°
7
48°
47°
8
48°
47°
9
48°
47°
10
51°
47°
11
50°
48°
12
51°
48°
13
50°
47°
14
52°
48°
15
51°
47°
16
51°
48°
17
50°
48°
18
50°
49°
19
52°
49°
20
52°
48°
21
51°
49°
22
52°
49°
23
52°
48°
24
51°
49°
25
52°
48°
26
52°
48°
27
51°
47°
28
52°
48°
29
51°
48°
30
53°
47°
31
52°
45°
1
51°
45°
2
49°
48°
3
51°
47°
4
50°
46°
5
50°
46°
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 46° to 53°, with overnight lows between 45° and 49°. The average high for August is 50° 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 Amchitka. See also: September | October | November.