S
M
T
W
T
F
S
26
52°
50°
27
52°
48°
28
52°
47°
29
51°
47°
30
51°
49°
31
52°
47°
1
51°
45°
2
51°
45°
3
56°
50°
4
56°
49°
5
54°
49°
6
55°
48°
7
56°
49°
8
55°
50°
9
56°
48°
10
56°
48°
11
55°
49°
12
56°
49°
13
56°
48°
14
55°
49°
15
56°
49°
16
56°
48°
17
55°
49°
18
56°
49°
19
56°
48°
20
55°
49°
21
56°
49°
22
56°
48°
23
55°
49°
24
56°
48°
25
54°
48°
26
55°
47°
27
55°
49°
28
54°
48°
29
55°
49°
30
56°
49°
31
56°
48°
1
55°
47°
2
55°
48°
3
54°
47°
4
55°
47°
5
55°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Umnak
Umnak's August 2026 forecast shows daily high temperatures ranging from 51° to 56°, with overnight lows between 42° and 50°. The average high for August is 55° 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 Umnak. See also: September | October | November.
