S
M
T
W
T
F
S
29
56°
33°
30
57°
41°
1
59°
46°
2
58°
47°
3
58°
46°
4
59°
46°
5
57°
45°
6
58°
41°
7
64°
43°
8
56°
37°
9
55°
32°
10
54°
39°
11
70°
36°
12
71°
31°
13
69°
30°
14
53°
31°
15
55°
30°
16
56°
31°
17
54°
41°
18
57°
45°
19
68°
45°
20
69°
43°
21
69°
42°
22
67°
47°
23
71°
37°
24
70°
29°
25
68°
28°
26
50°
29°
27
52°
31°
28
58°
43°
29
65°
45°
30
67°
45°
31
67°
47°
1
68°
39°
2
69°
31°
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 50° to 71°, with overnight lows between 28° and 47°. 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.