S
M
T
W
T
F
S
29
78°
58°
30
79°
57°
1
77°
59°
2
80°
58°
3
82°
52°
4
82°
51°
5
75°
52°
6
74°
58°
7
76°
59°
8
77°
58°
9
74°
49°
10
80°
57°
11
Hist. Avg.
74°
52°
12
Hist. Avg.
74°
52°
13
Hist. Avg.
74°
52°
14
Hist. Avg.
74°
52°
15
Hist. Avg.
74°
52°
16
Hist. Avg.
74°
52°
17
Hist. Avg.
73°
51°
18
Hist. Avg.
73°
51°
19
Hist. Avg.
73°
51°
20
Hist. Avg.
73°
51°
21
Hist. Avg.
73°
51°
22
Hist. Avg.
73°
50°
23
Hist. Avg.
73°
50°
24
Hist. Avg.
72°
50°
25
Hist. Avg.
72°
50°
26
Hist. Avg.
72°
50°
27
Hist. Avg.
72°
50°
28
Hist. Avg.
72°
50°
29
Hist. Avg.
72°
49°
30
Hist. Avg.
72°
49°
31
Hist. Avg.
72°
49°
1
Hist. Avg.
72°
49°
2
Hist. Avg.
72°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Dover
Dover's December 2026 forecast shows daily high temperatures ranging from 74° to 82°, with overnight lows between 49° and 59°. The average high for December is 78° with an average low of 56°. 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.