S
M
T
W
T
F
S
29
56°
41°
30
56°
33°
1
54°
32°
2
51°
30°
3
44°
28°
4
42°
34°
5
47°
34°
6
53°
30°
7
45°
28°
8
41°
32°
9
41°
32°
10
42°
26°
11
41°
25°
12
40°
28°
13
43°
23°
14
41°
21°
15
38°
23°
16
37°
26°
17
Hist. Avg.
44°
31°
18
Hist. Avg.
43°
31°
19
Hist. Avg.
43°
30°
20
Hist. Avg.
43°
30°
21
Hist. Avg.
43°
30°
22
Hist. Avg.
42°
30°
23
Hist. Avg.
42°
29°
24
Hist. Avg.
42°
29°
25
Hist. Avg.
42°
29°
26
Hist. Avg.
42°
28°
27
Hist. Avg.
41°
28°
28
Hist. Avg.
41°
28°
29
Hist. Avg.
41°
28°
30
Hist. Avg.
41°
28°
31
Hist. Avg.
41°
27°
1
Hist. Avg.
40°
27°
2
Hist. Avg.
40°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Wellfleet
Wellfleet's December 2026 forecast shows daily high temperatures ranging from 37° to 56°, with overnight lows between 21° and 41°. The average high for December is 45° with an average low of 29°. 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.
