S
M
T
W
T
F
S
29
43°
20°
30
43°
20°
1
41°
19°
2
42°
20°
3
42°
19°
4
41°
19°
5
41°
18°
6
39°
18°
7
40°
17°
8
41°
18°
9
40°
18°
10
41°
17°
11
27°
8°
12
28°
11°
13
35°
13°
14
36°
14°
15
40°
17°
16
43°
16°
17
39°
14°
18
40°
13°
19
37°
8°
20
35°
10°
21
34°
10°
22
35°
0°
23
29°
1°
24
25°
9°
25
34°
10°
26
33°
11°
27
33°
-5°
28
31°
-7°
29
23°
-4°
30
22°
-5°
31
23°
-7°
1
20°
-10°
2
18°
-8°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Chester
Chester's December 2026 forecast shows daily high temperatures ranging from 18° to 43°, with overnight lows between -10° and 20°. The average high for December is 35° with an average low of 10°. 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 Chester. See also: January | February | March.
