S
M
T
W
T
F
S
29
40°
29°
30
46°
22°
1
46°
18°
2
42°
27°
3
43°
20°
4
45°
19°
5
32°
17°
6
30°
17°
7
30°
20°
8
31°
24°
9
36°
28°
10
38°
28°
11
42°
24°
12
41°
21°
13
35°
24°
14
33°
18°
15
34°
14°
16
29°
12°
17
27°
13°
18
25°
22°
19
34°
21°
20
35°
16°
21
39°
16°
22
28°
25°
23
39°
26°
24
38°
22°
25
37°
21°
26
37°
21°
27
33°
22°
28
36°
23°
29
37°
23°
30
37°
25°
31
38°
24°
1
40°
21°
2
38°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hallowell
Hallowell's December 2026 forecast shows daily high temperatures ranging from 25° to 46°, with overnight lows between 12° and 29°. The average high for December is 36° with an average low of 21°. 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 Hallowell. See also: January | February | March.