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