S
M
T
W
T
F
S
29
33°
31°
30
36°
30°
1
37°
27°
2
32°
29°
3
34°
31°
4
35°
33°
5
39°
35°
6
40°
34°
7
41°
34°
8
40°
33°
9
39°
32°
10
38°
33°
11
39°
34°
12
42°
32°
13
36°
33°
14
36°
27°
15
33°
20°
16
33°
19°
17
32°
31°
18
41°
35°
19
46°
34°
20
38°
38°
21
38°
28°
22
46°
29°
23
39°
20°
24
36°
19°
25
31°
20°
26
26°
23°
27
27°
24°
28
32°
26°
29
32°
17°
30
30°
14°
31
27°
13°
1
23°
12°
2
21°
12°
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 21° to 46°, with overnight lows between 12° and 38°. The average high for December is 35° with an average low of 27°. 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.
