S
M
T
W
T
F
S
29
48°
30°
30
50°
33°
1
52°
33°
2
54°
36°
3
55°
36°
4
43°
30°
5
53°
26°
6
59°
24°
7
45°
23°
8
44°
21°
9
42°
19°
10
40°
15°
11
38°
15°
12
37°
20°
13
37°
18°
14
40°
25°
15
42°
30°
16
46°
30°
17
56°
23°
18
54°
22°
19
44°
21°
20
42°
22°
21
41°
18°
22
40°
18°
23
41°
19°
24
45°
30°
25
45°
34°
26
53°
29°
27
56°
24°
28
47°
23°
29
43°
25°
30
45°
25°
31
44°
21°
1
44°
21°
2
42°
23°
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 37° to 59°, with overnight lows between 15° and 36°. The average high for December is 46° with an average low of 25°. 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.