S
M
T
W
T
F
S
29
70°
46°
30
67°
48°
1
69°
43°
2
57°
36°
3
55°
33°
4
57°
36°
5
62°
42°
6
57°
36°
7
55°
36°
8
53°
33°
9
53°
33°
10
52°
31°
11
53°
32°
12
54°
33°
13
59°
34°
14
56°
35°
15
57°
42°
16
58°
37°
17
59°
36°
18
63°
34°
19
55°
29°
20
53°
29°
21
52°
30°
22
55°
31°
23
55°
32°
24
51°
30°
25
52°
29°
26
52°
30°
27
53°
29°
28
54°
29°
29
54°
35°
30
55°
32°
31
53°
30°
1
51°
27°
2
50°
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 50° to 70°, with overnight lows between 27° and 48°. The average high for December is 56° with an average low of 34°. 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.