S
M
T
W
T
F
S
26
65°
57°
27
62°
55°
28
57°
46°
29
51°
42°
30
57°
45°
31
59°
52°
1
59°
47°
2
75°
47°
3
74°
52°
4
67°
51°
5
60°
48°
6
58°
47°
7
59°
52°
8
61°
52°
9
55°
53°
10
56°
51°
11
56°
47°
12
58°
49°
13
59°
49°
14
56°
49°
15
55°
49°
16
56°
50°
17
57°
49°
18
56°
48°
19
55°
49°
20
56°
48°
21
57°
47°
22
57°
48°
23
58°
50°
24
59°
48°
25
57°
49°
26
59°
51°
27
56°
50°
28
56°
48°
29
56°
47°
30
55°
47°
31
55°
50°
1
56°
49°
2
55°
49°
3
55°
47°
4
56°
46°
5
54°
46°
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 54° to 59°, with overnight lows between 46° and 51°. The average high for August is 56° with an average low of 48°. 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.
