S
M
T
W
T
F
S
26
57°
38°
27
56°
34°
28
65°
45°
29
53°
39°
30
57°
35°
1
54°
32°
2
47°
33°
3
58°
43°
4
66°
52°
5
56°
38°
6
51°
34°
7
47°
33°
8
49°
34°
9
50°
33°
10
53°
38°
11
56°
40°
12
55°
40°
13
58°
42°
14
57°
42°
15
57°
41°
16
59°
54°
17
68°
47°
18
67°
45°
19
62°
44°
20
65°
48°
21
66°
45°
22
61°
40°
23
58°
39°
24
60°
40°
25
59°
41°
26
61°
41°
27
61°
42°
28
62°
41°
29
61°
41°
30
63°
46°
31
64°
47°
1
64°
45°
2
64°
44°
3
69°
51°
4
67°
48°
5
68°
53°
6
74°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Acton
Acton's May 2026 forecast shows daily high temperatures ranging from 47° to 74°, with overnight lows between 33° and 54°. The average high for May is 60° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Acton. See also: June | July | August.
