S
M
T
W
T
F
S
29
57°
37°
30
59°
39°
1
61°
41°
2
57°
41°
3
59°
40°
4
57°
37°
5
58°
36°
6
57°
36°
7
59°
37°
8
60°
37°
9
60°
36°
10
61°
37°
11
60°
38°
12
59°
39°
13
59°
37°
14
57°
36°
15
60°
36°
16
58°
36°
17
Hist. Avg.
57°
34°
18
Hist. Avg.
57°
34°
19
Hist. Avg.
57°
34°
20
Hist. Avg.
57°
34°
21
Hist. Avg.
57°
34°
22
Hist. Avg.
57°
34°
23
Hist. Avg.
57°
34°
24
Hist. Avg.
57°
34°
25
Hist. Avg.
57°
34°
26
Hist. Avg.
57°
34°
27
Hist. Avg.
57°
34°
28
Hist. Avg.
57°
34°
29
Hist. Avg.
57°
34°
30
Hist. Avg.
58°
34°
31
Hist. Avg.
58°
34°
1
Hist. Avg.
58°
34°
2
Hist. Avg.
58°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Acton
Acton's December 2026 forecast shows daily high temperatures ranging from 57° to 61°, with overnight lows between 36° and 41°. The average high for December is 59° with an average low of 38°. 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 Acton. See also: January | February | March.
