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