S
M
T
W
T
F
S
29
49°
32°
30
46°
26°
1
35°
19°
2
33°
16°
3
37°
30°
4
40°
29°
5
36°
29°
6
35°
23°
7
32°
19°
8
31°
21°
9
36°
21°
10
39°
28°
11
39°
28°
12
44°
25°
13
41°
28°
14
37°
25°
15
38°
24°
16
38°
22°
17
36°
18°
18
34°
15°
19
33°
11°
20
29°
9°
21
26°
23°
22
36°
20°
23
36°
18°
24
35°
9°
25
31°
19°
26
31°
24°
27
37°
22°
28
37°
21°
29
34°
14°
30
33°
18°
31
31°
6°
1
31°
4°
2
26°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Westboro
Westboro's December 2026 forecast shows daily high temperatures ranging from 26° to 49°, with overnight lows between 4° and 32°. The average high for December is 35° with an average low of 20°. 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 Westboro. See also: January | February | March.
