S
M
T
W
T
F
S
29
51°
37°
30
49°
40°
1
49°
38°
2
50°
37°
3
49°
40°
4
50°
38°
5
49°
35°
6
49°
36°
7
48°
37°
8
48°
37°
9
49°
36°
10
48°
34°
11
49°
37°
12
48°
36°
13
49°
37°
14
48°
38°
15
48°
36°
16
50°
35°
17
48°
34°
18
48°
36°
19
49°
36°
20
48°
35°
21
48°
35°
22
49°
36°
23
49°
36°
24
48°
39°
25
48°
39°
26
50°
35°
27
49°
39°
28
48°
42°
29
51°
44°
30
53°
42°
31
53°
41°
1
Hist. Avg.
46°
38°
2
Hist. Avg.
46°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Weymouth
Weymouth's December 2026 forecast shows daily high temperatures ranging from 48° to 53°, with overnight lows between 34° and 44°. The average high for December is 49° with an average low of 37°. 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 Weymouth. See also: January | February | March.
