S
M
T
W
T
F
S
29
65°
42°
30
63°
43°
1
65°
39°
2
52°
32°
3
50°
28°
4
53°
34°
5
58°
39°
6
52°
32°
7
49°
31°
8
48°
27°
9
48°
29°
10
47°
26°
11
48°
27°
12
49°
30°
13
54°
30°
14
51°
30°
15
51°
38°
16
52°
35°
17
53°
31°
18
58°
30°
19
50°
25°
20
49°
25°
21
48°
26°
22
50°
28°
23
50°
29°
24
47°
26°
25
48°
25°
26
47°
26°
27
49°
25°
28
49°
26°
29
50°
30°
30
50°
28°
31
48°
26°
1
47°
23°
2
46°
24°
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 46° to 65°, with overnight lows between 23° and 43°. The average high for December is 51° with an average low of 30°. 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.