S
M
T
W
T
F
S
26
55°
49°
27
54°
48°
28
55°
49°
29
55°
49°
30
56°
48°
31
56°
49°
1
55°
49°
2
56°
48°
3
56°
49°
4
54°
49°
5
55°
48°
6
56°
49°
7
55°
48°
8
56°
50°
9
57°
49°
10
57°
49°
11
56°
48°
12
56°
49°
13
55°
49°
14
55°
48°
15
56°
44°
16
56°
49°
17
55°
49°
18
56°
48°
19
57°
49°
20
57°
49°
21
56°
48°
22
55°
48°
23
56°
49°
24
55°
48°
25
54°
47°
26
54°
47°
27
55°
48°
28
55°
48°
29
54°
47°
30
56°
48°
31
57°
49°
1
Hist. Avg.
58°
47°
2
Hist. Avg.
58°
47°
3
Hist. Avg.
57°
47°
4
Hist. Avg.
57°
47°
5
Hist. Avg.
57°
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 54° to 57°, with overnight lows between 44° and 50°. 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 Umnak. See also: September | October | November.
