S
M
T
W
T
F
S
29
40°
26°
30
35°
20°
1
27°
18°
2
28°
23°
3
37°
24°
4
40°
25°
5
32°
24°
6
31°
20°
7
25°
17°
8
27°
22°
9
36°
22°
10
38°
21°
11
37°
22°
12
37°
21°
13
36°
22°
14
29°
20°
15
33°
20°
16
33°
17°
17
32°
12°
18
30°
8°
19
26°
3°
20
20°
3°
21
19°
16°
22
31°
16°
23
32°
9°
24
30°
8°
25
26°
17°
26
29°
17°
27
32°
16°
28
32°
13°
29
31°
13°
30
28°
8°
31
26°
0°
1
21°
1°
2
18°
12°
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 40°, with overnight lows between -0° and 26°. The average high for December is 30° with an average low of 16°. 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.
