S
M
T
W
T
F
S
29
49°
41°
30
51°
40°
1
51°
40°
2
50°
39°
3
50°
38°
4
49°
35°
5
49°
37°
6
47°
39°
7
47°
36°
8
48°
39°
9
47°
40°
10
48°
39°
11
49°
40°
12
45°
38°
13
44°
34°
14
50°
39°
15
49°
39°
16
Hist. Avg.
45°
36°
17
Hist. Avg.
45°
36°
18
Hist. Avg.
45°
36°
19
Hist. Avg.
45°
36°
20
Hist. Avg.
45°
36°
21
Hist. Avg.
45°
36°
22
Hist. Avg.
44°
35°
23
Hist. Avg.
44°
35°
24
Hist. Avg.
44°
35°
25
Hist. Avg.
44°
35°
26
Hist. Avg.
44°
35°
27
Hist. Avg.
44°
35°
28
Hist. Avg.
44°
35°
29
Hist. Avg.
44°
35°
30
Hist. Avg.
44°
35°
31
Hist. Avg.
44°
35°
1
Hist. Avg.
43°
34°
2
Hist. Avg.
43°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Gloucester
Gloucester's December 2026 forecast shows daily high temperatures ranging from 44° to 51°, with overnight lows between 34° and 41°. The average high for December is 48° with an average low of 38°. 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 Gloucester. See also: January | February | March.