S
M
T
W
T
F
S
27
29°
8°
28
25°
9°
29
28°
9°
30
26°
13°
31
29°
20°
1
39°
18°
2
39°
10°
3
36°
6°
4
24°
8°
5
27°
17°
6
35°
19°
7
37°
17°
8
42°
3°
9
42°
3°
10
22°
14°
11
28°
6°
12
30°
5°
13
24°
3°
14
26°
-2°
15
21°
2°
16
19°
10°
17
27°
12°
18
29°
15°
19
39°
4°
20
38°
3°
21
20°
11°
22
25°
15°
23
34°
16°
24
37°
17°
25
36°
17°
26
37°
18°
27
37°
18°
28
38°
16°
29
41°
17°
30
36°
15°
31
25°
9°
1
36°
2°
2
36°
1°
3
Hist. Avg.
32°
11°
4
Hist. Avg.
32°
11°
5
Hist. Avg.
33°
11°
6
Hist. Avg.
33°
12°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Acton
Acton's January 2027 forecast shows daily high temperatures ranging from 19° to 42°, with overnight lows between -2° and 20°. The average high for January is 32° with an average low of 11°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Acton. See also: February | March | April.