S
M
T
W
T
F
S
29
44°
25°
30
43°
25°
1
42°
26°
2
42°
36°
3
54°
31°
4
56°
25°
5
44°
26°
6
41°
27°
7
46°
30°
8
50°
33°
9
43°
24°
10
48°
32°
11
50°
35°
12
Hist. Avg.
43°
26°
13
Hist. Avg.
43°
26°
14
Hist. Avg.
42°
26°
15
Hist. Avg.
42°
25°
16
Hist. Avg.
42°
25°
17
Hist. Avg.
41°
25°
18
Hist. Avg.
41°
24°
19
Hist. Avg.
41°
24°
20
Hist. Avg.
40°
24°
21
Hist. Avg.
40°
24°
22
Hist. Avg.
40°
24°
23
Hist. Avg.
40°
23°
24
Hist. Avg.
40°
23°
25
Hist. Avg.
39°
23°
26
Hist. Avg.
39°
23°
27
Hist. Avg.
39°
23°
28
Hist. Avg.
39°
22°
29
Hist. Avg.
39°
22°
30
Hist. Avg.
38°
22°
31
Hist. Avg.
38°
22°
1
Hist. Avg.
38°
22°
2
Hist. Avg.
38°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in West Chester
West Chester's December 2026 forecast shows daily high temperatures ranging from 41° to 56°, with overnight lows between 24° and 36°. The average high for December is 46° with an average low of 29°. 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 West Chester. See also: January | February | March.
