S
M
T
W
T
F
S
29
49°
37°
30
51°
36°
1
50°
34°
2
48°
32°
3
40°
34°
4
46°
31°
5
48°
34°
6
44°
33°
7
38°
27°
8
35°
23°
9
34°
22°
10
36°
27°
11
39°
32°
12
42°
28°
13
40°
27°
14
33°
19°
15
34°
24°
16
36°
29°
17
40°
28°
18
38°
25°
19
39°
19°
20
35°
18°
21
30°
17°
22
30°
22°
23
34°
26°
24
35°
24°
25
34°
15°
26
32°
11°
27
29°
13°
28
28°
13°
29
28°
14°
30
29°
22°
31
31°
15°
1
32°
11°
2
29°
8°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Westfield
Westfield's December 2026 forecast shows daily high temperatures ranging from 28° to 51°, with overnight lows between 8° and 37°. The average high for December is 37° with an average low of 24°. 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 Westfield. See also: January | February | March.
