S
M
T
W
T
F
S
29
37°
31°
30
37°
31°
1
36°
30°
2
37°
30°
3
37°
29°
4
36°
29°
5
35°
30°
6
38°
30°
7
37°
29°
8
35°
28°
9
34°
24°
10
31°
25°
11
33°
20°
12
30°
20°
13
30°
21°
14
31°
28°
15
36°
23°
16
35°
19°
17
31°
18°
18
28°
17°
19
27°
17°
20
26°
18°
21
25°
18°
22
27°
26°
23
36°
21°
24
37°
19°
25
34°
22°
26
35°
24°
27
30°
28°
28
37°
27°
29
37°
25°
30
32°
28°
31
34°
30°
1
37°
28°
2
40°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Old Harbor
Old Harbor's December 2026 forecast shows daily high temperatures ranging from 25° to 40°, with overnight lows between 17° and 31°. The average high for December is 34° with an average low of 25°. 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 Old Harbor. See also: January | February | March.
