S
M
T
W
T
F
S
29
33°
17°
30
30°
17°
1
35°
20°
2
42°
20°
3
42°
19°
4
39°
18°
5
38°
18°
6
35°
17°
7
36°
18°
8
41°
18°
9
42°
17°
10
40°
18°
11
42°
17°
12
40°
16°
13
41°
17°
14
37°
13°
15
33°
5°
16
33°
3°
17
32°
5°
18
31°
7°
19
30°
13°
20
35°
10°
21
36°
9°
22
32°
12°
23
32°
10°
24
36°
11°
25
30°
5°
26
36°
-5°
27
32°
-6°
28
21°
-1°
29
21°
-4°
30
27°
-1°
31
22°
12°
1
35°
13°
2
35°
7°
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 21° to 42°, with overnight lows between -6° and 20°. The average high for December is 34° with an average low of 11°. 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.
