S
M
T
W
T
F
S
29
50°
30°
30
44°
27°
1
42°
27°
2
40°
30°
3
41°
25°
4
43°
21°
5
40°
25°
6
39°
26°
7
38°
22°
8
39°
18°
9
37°
16°
10
34°
15°
11
33°
26°
12
45°
22°
13
36°
25°
14
Hist. Avg.
41°
24°
15
Hist. Avg.
41°
23°
16
Hist. Avg.
40°
23°
17
Hist. Avg.
40°
23°
18
Hist. Avg.
40°
23°
19
Hist. Avg.
40°
22°
20
Hist. Avg.
40°
22°
21
Hist. Avg.
39°
22°
22
Hist. Avg.
39°
22°
23
Hist. Avg.
39°
22°
24
Hist. Avg.
38°
22°
25
Hist. Avg.
38°
21°
26
Hist. Avg.
38°
21°
27
Hist. Avg.
38°
21°
28
Hist. Avg.
38°
21°
29
Hist. Avg.
38°
20°
30
Hist. Avg.
37°
20°
31
Hist. Avg.
37°
20°
1
Hist. Avg.
37°
20°
2
Hist. Avg.
37°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Westford
Westford's December 2026 forecast shows daily high temperatures ranging from 33° to 50°, with overnight lows between 15° and 30°. The average high for December is 40° 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 Westford. See also: January | February | March.
