S
M
T
W
T
F
S
29
57°
42°
30
64°
40°
1
66°
37°
2
63°
35°
3
57°
28°
4
56°
25°
5
51°
26°
6
44°
22°
7
46°
23°
8
47°
28°
9
47°
26°
10
59°
26°
11
46°
24°
12
47°
28°
13
47°
25°
14
49°
23°
15
45°
21°
16
44°
19°
17
44°
23°
18
45°
31°
19
53°
36°
20
56°
32°
21
59°
34°
22
54°
40°
23
59°
41°
24
62°
40°
25
63°
37°
26
61°
36°
27
56°
37°
28
52°
39°
29
59°
40°
30
61°
40°
31
63°
36°
1
62°
28°
2
57°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Lexington
Lexington's December 2026 forecast shows daily high temperatures ranging from 44° to 66°, with overnight lows between 19° and 42°. The average high for December is 54° 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 Lexington. See also: January | February | March.