S
M
T
W
T
F
S
29
56°
35°
30
59°
37°
1
63°
37°
2
65°
33°
3
58°
35°
4
58°
45°
5
63°
50°
6
69°
46°
7
72°
36°
8
67°
36°
9
62°
46°
10
65°
48°
11
68°
46°
12
71°
38°
13
65°
32°
14
56°
34°
15
56°
39°
16
63°
46°
17
65°
46°
18
68°
48°
19
70°
48°
20
72°
43°
21
72°
37°
22
62°
31°
23
55°
38°
24
59°
45°
25
64°
45°
26
64°
34°
27
67°
32°
28
57°
31°
29
51°
28°
30
53°
27°
31
52°
29°
1
52°
32°
2
60°
43°
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 72°, with overnight lows between 27° and 50°. The average high for December is 62° with an average low of 39°. 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.