S
M
T
W
T
F
S
29
42°
29°
30
40°
27°
1
39°
27°
2
39°
28°
3
41°
28°
4
41°
31°
5
42°
30°
6
41°
34°
7
42°
34°
8
43°
33°
9
43°
27°
10
37°
27°
11
49°
29°
12
47°
30°
13
40°
30°
14
48°
28°
15
44°
24°
16
39°
21°
17
36°
26°
18
36°
28°
19
41°
28°
20
42°
29°
21
41°
30°
22
46°
28°
23
46°
30°
24
45°
33°
25
48°
23°
26
49°
21°
27
48°
19°
28
33°
22°
29
33°
27°
30
42°
27°
31
43°
28°
1
45°
30°
2
47°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Foxborough
Foxborough's December 2026 forecast shows daily high temperatures ranging from 33° to 49°, with overnight lows between 19° and 34°. The average high for December is 42° with an average low of 28°. 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 Foxborough. See also: January | February | March.