S
M
T
W
T
F
S
29
43°
32°
30
45°
32°
1
44°
33°
2
43°
32°
3
45°
30°
4
40°
27°
5
42°
30°
6
43°
30°
7
41°
27°
8
33°
26°
9
34°
28°
10
33°
28°
11
33°
27°
12
35°
26°
13
34°
26°
14
32°
20°
15
33°
19°
16
31°
20°
17
33°
24°
18
34°
25°
19
37°
24°
20
36°
17°
21
33°
19°
22
32°
21°
23
28°
17°
24
32°
18°
25
26°
16°
26
27°
13°
27
26°
8°
28
24°
6°
29
25°
3°
30
25°
15°
31
26°
17°
1
35°
12°
2
28°
11°
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 24° to 45°, with overnight lows between 3° and 33°. The average high for December is 34° with an average low of 22°. 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.