S
M
T
W
T
F
S
29
44°
32°
30
43°
33°
1
44°
35°
2
50°
39°
3
50°
35°
4
46°
31°
5
42°
31°
6
42°
33°
7
49°
32°
8
46°
36°
9
50°
33°
10
48°
32°
11
47°
36°
12
47°
37°
13
45°
37°
14
47°
36°
15
47°
37°
16
48°
36°
17
47°
36°
18
47°
37°
19
46°
36°
20
47°
37°
21
49°
37°
22
48°
36°
23
48°
36°
24
47°
35°
25
48°
36°
26
47°
37°
27
47°
37°
28
46°
36°
29
48°
36°
30
47°
38°
31
49°
37°
1
49°
36°
2
48°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Gillingham
Gillingham's December 2026 forecast shows daily high temperatures ranging from 42° to 50°, with overnight lows between 31° and 39°. The average high for December is 47° with an average low of 35°. 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 Gillingham. See also: January | February | March.
