S
M
T
W
T
F
S
29
49°
40°
30
51°
42°
1
53°
41°
2
52°
41°
3
54°
39°
4
51°
39°
5
50°
38°
6
51°
39°
7
52°
38°
8
47°
37°
9
43°
36°
10
43°
36°
11
44°
35°
12
45°
34°
13
44°
31°
14
44°
24°
15
39°
25°
16
36°
29°
17
40°
28°
18
39°
34°
19
47°
33°
20
48°
30°
21
43°
25°
22
39°
26°
23
37°
25°
24
39°
32°
25
42°
25°
26
47°
21°
27
37°
23°
28
34°
24°
29
38°
23°
30
37°
27°
31
39°
32°
1
49°
27°
2
47°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Wellfleet
Wellfleet's December 2026 forecast shows daily high temperatures ranging from 34° to 54°, with overnight lows between 21° and 42°. The average high for December is 44° with an average low of 31°. 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 Wellfleet. See also: January | February | March.
