S
M
T
W
T
F
S
29
44°
27°
30
46°
31°
1
48°
30°
2
46°
30°
3
48°
29°
4
45°
27°
5
45°
27°
6
43°
28°
7
46°
27°
8
39°
25°
9
35°
26°
10
36°
24°
11
36°
25°
12
37°
23°
13
37°
18°
14
38°
16°
15
34°
16°
16
32°
16°
17
34°
17°
18
33°
22°
19
35°
21°
20
38°
19°
21
35°
17°
22
33°
16°
23
31°
9°
24
33°
17°
25
29°
13°
26
34°
6°
27
28°
4°
28
24°
5°
29
27°
3°
30
25°
8°
31
27°
19°
1
40°
13°
2
38°
8°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Dorset
Dorset's December 2026 forecast shows daily high temperatures ranging from 24° to 48°, with overnight lows between 3° and 31°. The average high for December is 37° with an average low of 19°. 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 Dorset. See also: January | February | March.
