S
M
T
W
T
F
S
29
46°
34°
30
50°
37°
1
51°
36°
2
50°
36°
3
52°
34°
4
50°
33°
5
49°
33°
6
48°
34°
7
50°
32°
8
44°
30°
9
40°
30°
10
41°
29°
11
41°
31°
12
42°
28°
13
41°
25°
14
42°
19°
15
36°
20°
16
34°
25°
17
37°
24°
18
36°
29°
19
44°
28°
20
46°
25°
21
41°
22°
22
36°
21°
23
35°
20°
24
37°
27°
25
39°
20°
26
45°
16°
27
34°
18°
28
31°
18°
29
35°
17°
30
34°
22°
31
35°
27°
1
47°
21°
2
45°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Attleboro
Attleboro's December 2026 forecast shows daily high temperatures ranging from 31° to 52°, with overnight lows between 16° and 37°. The average high for December is 42° with an average low of 26°. 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 Attleboro. See also: January | February | March.
