S
M
T
W
T
F
S
29
43°
23°
30
35°
21°
1
34°
22°
2
36°
28°
3
43°
29°
4
35°
23°
5
34°
21°
6
34°
20°
7
33°
19°
8
33°
19°
9
34°
20°
10
33°
20°
11
37°
19°
12
40°
21°
13
39°
19°
14
37°
27°
15
33°
24°
16
33°
17°
17
31°
19°
18
32°
24°
19
33°
23°
20
35°
28°
21
36°
18°
22
32°
18°
23
32°
19°
24
35°
19°
25
32°
28°
26
37°
22°
27
38°
17°
28
33°
22°
29
29°
21°
30
35°
16°
31
30°
18°
1
36°
28°
2
37°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Syracuse
Syracuse's December 2026 forecast shows daily high temperatures ranging from 29° to 43°, with overnight lows between 16° and 29°. The average high for December is 35° with an average low of 21°. 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 Syracuse. See also: January | February | March.
