S
M
T
W
T
F
S
29
43°
34°
30
41°
34°
1
40°
31°
2
41°
33°
3
39°
30°
4
40°
32°
5
39°
31°
6
39°
29°
7
43°
29°
8
42°
28°
9
36°
28°
10
37°
29°
11
40°
28°
12
37°
26°
13
38°
29°
14
37°
30°
15
36°
31°
16
37°
32°
17
38°
31°
18
41°
30°
19
41°
30°
20
38°
31°
21
39°
32°
22
40°
31°
23
42°
31°
24
39°
29°
25
38°
32°
26
40°
30°
27
36°
28°
28
34°
31°
29
Hist. Avg.
38°
30°
30
Hist. Avg.
38°
30°
31
Hist. Avg.
38°
30°
1
Hist. Avg.
37°
30°
2
Hist. Avg.
37°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Umnak
Umnak's December 2026 forecast shows daily high temperatures ranging from 34° to 43°, with overnight lows between 26° and 34°. The average high for December is 39° with an average low of 30°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Umnak. See also: January | February | March.
