S
M
T
W
T
F
S
29
56°
36°
30
55°
37°
1
56°
39°
2
56°
46°
3
57°
48°
4
57°
47°
5
58°
47°
6
57°
46°
7
59°
45°
8
56°
43°
9
55°
38°
10
54°
35°
11
67°
49°
12
69°
38°
13
70°
33°
14
67°
35°
15
53°
34°
16
54°
32°
17
53°
35°
18
54°
46°
19
63°
47°
20
66°
46°
21
67°
44°
22
68°
44°
23
64°
48°
24
67°
35°
25
69°
33°
26
68°
33°
27
53°
38°
28
55°
45°
29
63°
45°
30
65°
46°
31
66°
47°
1
67°
47°
2
67°
42°
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 53° to 70°, with overnight lows between 32° and 49°. The average high for December is 61° with an average low of 41°. 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.