S
M
T
W
T
F
S
29
51°
40°
30
59°
40°
1
57°
41°
2
58°
37°
3
47°
34°
4
54°
33°
5
57°
40°
6
55°
35°
7
45°
32°
8
44°
27°
9
44°
27°
10
45°
26°
11
42°
26°
12
43°
25°
13
43°
24°
14
45°
25°
15
45°
31°
16
47°
34°
17
46°
35°
18
51°
29°
19
50°
25°
20
45°
23°
21
42°
23°
22
42°
25°
23
45°
28°
24
43°
25°
25
42°
24°
26
41°
22°
27
41°
23°
28
40°
22°
29
42°
26°
30
44°
28°
31
48°
24°
1
46°
20°
2
40°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Sparta
Sparta's December 2026 forecast shows daily high temperatures ranging from 40° to 59°, with overnight lows between 19° and 41°. The average high for December is 47° with an average low of 29°. 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 Sparta. See also: January | February | March.
