S
M
T
W
T
F
S
29
38°
23°
30
38°
31°
1
47°
28°
2
48°
29°
3
41°
32°
4
49°
23°
5
50°
24°
6
35°
20°
7
36°
24°
8
37°
19°
9
36°
16°
10
33°
16°
11
30°
17°
12
31°
15°
13
31°
17°
14
32°
16°
15
31°
17°
16
31°
20°
17
34°
22°
18
35°
25°
19
36°
27°
20
36°
26°
21
37°
22°
22
37°
20°
23
34°
19°
24
33°
21°
25
32°
25°
26
37°
24°
27
36°
23°
28
35°
21°
29
34°
20°
30
34°
17°
31
28°
14°
1
27°
18°
2
Hist. Avg.
33°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Dover
Dover's December 2026 forecast shows daily high temperatures ranging from 27° to 50°, with overnight lows between 14° and 32°. The average high for December is 36° with an average low of 22°. 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 Dover. See also: January | February | March.
