S
M
T
W
T
F
S
29
53°
35°
30
51°
32°
1
52°
29°
2
57°
37°
3
57°
37°
4
56°
39°
5
56°
36°
6
46°
33°
7
47°
33°
8
43°
26°
9
40°
22°
10
39°
21°
11
39°
21°
12
40°
22°
13
42°
23°
14
48°
27°
15
51°
37°
16
52°
35°
17
50°
32°
18
45°
35°
19
50°
30°
20
46°
26°
21
40°
23°
22
37°
30°
23
42°
26°
24
44°
20°
25
38°
15°
26
35°
17°
27
32°
32°
28
43°
32°
29
44°
20°
30
47°
18°
31
47°
19°
1
36°
19°
2
44°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Sylvester
Sylvester's December 2026 forecast shows daily high temperatures ranging from 32° to 57°, with overnight lows between 15° and 39°. The average high for December is 45° with an average low of 27°. 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 Sylvester. See also: January | February | March.