S
M
T
W
T
F
S
29
48°
38°
30
51°
41°
1
53°
40°
2
52°
40°
3
53°
39°
4
51°
38°
5
51°
37°
6
50°
38°
7
52°
37°
8
46°
35°
9
42°
34°
10
43°
33°
11
42°
35°
12
43°
32°
13
42°
29°
14
44°
24°
15
38°
24°
16
36°
29°
17
39°
28°
18
38°
33°
19
46°
32°
20
47°
29°
21
42°
26°
22
38°
26°
23
37°
24°
24
39°
31°
25
40°
24°
26
46°
21°
27
36°
22°
28
33°
22°
29
37°
21°
30
35°
26°
31
36°
31°
1
48°
25°
2
46°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fairhaven
Fairhaven's December 2026 forecast shows daily high temperatures ranging from 33° to 53°, with overnight lows between 20° and 41°. The average high for December is 43° with an average low of 30°. 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 Fairhaven. See also: January | February | March.
