S
M
T
W
T
F
S
29
50°
28°
30
39°
22°
1
35°
19°
2
36°
27°
3
44°
28°
4
43°
28°
5
40°
27°
6
39°
24°
7
34°
21°
8
34°
26°
9
45°
26°
10
47°
27°
11
47°
26°
12
46°
25°
13
46°
26°
14
39°
23°
15
39°
24°
16
39°
17°
17
40°
14°
18
36°
9°
19
35°
8°
20
28°
13°
21
31°
19°
22
40°
17°
23
40°
17°
24
36°
16°
25
36°
21°
26
40°
21°
27
43°
20°
28
39°
17°
29
38°
17°
30
37°
8°
31
33°
7°
1
28°
13°
2
31°
21°
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 28° to 50°, with overnight lows between 7° and 28°. The average high for December is 39° with an average low of 20°. 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.