S
M
T
W
T
F
S
29
58°
34°
30
57°
25°
1
54°
25°
2
41°
24°
3
40°
24°
4
40°
35°
5
50°
34°
6
53°
27°
7
45°
26°
8
42°
32°
9
46°
26°
10
48°
24°
11
41°
22°
12
39°
23°
13
42°
22°
14
37°
20°
15
36°
19°
16
39°
19°
17
38°
22°
18
Hist. Avg.
44°
27°
19
Hist. Avg.
43°
26°
20
Hist. Avg.
43°
26°
21
Hist. Avg.
43°
26°
22
Hist. Avg.
43°
26°
23
Hist. Avg.
42°
26°
24
Hist. Avg.
42°
26°
25
Hist. Avg.
42°
25°
26
Hist. Avg.
42°
25°
27
Hist. Avg.
42°
25°
28
Hist. Avg.
42°
25°
29
Hist. Avg.
41°
24°
30
Hist. Avg.
41°
24°
31
Hist. Avg.
41°
24°
1
Hist. Avg.
41°
24°
2
Hist. Avg.
41°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Lancaster
Lancaster's December 2026 forecast shows daily high temperatures ranging from 36° to 58°, with overnight lows between 19° and 35°. The average high for December is 45° 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 Lancaster. See also: January | February | March.
