S
M
T
W
T
F
S
29
70°
46°
30
68°
47°
1
70°
41°
2
56°
34°
3
55°
32°
4
57°
37°
5
65°
40°
6
56°
33°
7
55°
34°
8
53°
32°
9
52°
31°
10
52°
30°
11
53°
31°
12
55°
33°
13
60°
35°
14
56°
35°
15
56°
38°
16
58°
35°
17
57°
34°
18
59°
32°
19
54°
29°
20
52°
29°
21
53°
30°
22
55°
31°
23
52°
31°
24
51°
30°
25
52°
29°
26
52°
29°
27
53°
28°
28
53°
30°
29
54°
32°
30
52°
31°
31
53°
29°
1
52°
27°
2
51°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Georgetown
Georgetown's December 2026 forecast shows daily high temperatures ranging from 51° to 70°, with overnight lows between 27° and 47°. The average high for December is 56° with an average low of 33°. 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 Georgetown. See also: January | February | March.