S
M
T
W
T
F
S
29
51°
36°
30
51°
33°
1
48°
26°
2
44°
32°
3
43°
33°
4
47°
32°
5
43°
30°
6
44°
35°
7
48°
29°
8
47°
27°
9
41°
26°
10
41°
23°
11
35°
24°
12
32°
21°
13
35°
18°
14
31°
17°
15
31°
16°
16
32°
23°
17
33°
12°
18
36°
13°
19
25°
17°
20
29°
24°
21
34°
27°
22
35°
25°
23
34°
27°
24
36°
28°
25
38°
26°
26
39°
26°
27
28°
14°
28
28°
17°
29
Hist. Avg.
34°
23°
30
Hist. Avg.
34°
23°
31
Hist. Avg.
34°
23°
1
Hist. Avg.
34°
22°
2
Hist. Avg.
34°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Bangor
Bangor's December 2026 forecast shows daily high temperatures ranging from 25° to 51°, with overnight lows between 12° and 36°. The average high for December is 38° 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 Bangor. See also: January | February | March.