S
M
T
W
T
F
S
29
52°
43°
30
62°
44°
1
61°
45°
2
63°
42°
3
54°
39°
4
56°
36°
5
59°
40°
6
60°
38°
7
50°
37°
8
48°
34°
9
49°
33°
10
48°
29°
11
46°
28°
12
47°
28°
13
50°
27°
14
50°
27°
15
49°
32°
16
48°
38°
17
52°
40°
18
57°
36°
19
56°
26°
20
49°
24°
21
46°
24°
22
45°
27°
23
48°
29°
24
46°
26°
25
45°
24°
26
44°
25°
27
46°
25°
28
46°
26°
29
47°
29°
30
50°
31°
31
56°
26°
1
50°
22°
2
45°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Jefferson
Jefferson's December 2026 forecast shows daily high temperatures ranging from 44° to 63°, with overnight lows between 21° and 45°. The average high for December is 51° with an average low of 31°. 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 Jefferson. See also: January | February | March.
