S
M
T
W
T
F
S
26
66°
39°
27
70°
43°
28
63°
46°
29
63°
46°
30
70°
48°
1
77°
43°
2
72°
46°
3
66°
54°
4
59°
52°
5
63°
50°
6
57°
45°
7
63°
45°
8
66°
41°
9
70°
43°
10
55°
36°
11
55°
34°
12
59°
32°
13
55°
43°
14
55°
43°
15
57°
41°
16
59°
36°
17
63°
45°
18
57°
45°
19
63°
52°
20
68°
54°
21
73°
52°
22
82°
50°
23
82°
61°
24
88°
55°
25
93°
59°
26
N/A
27
85°
61°
28
92°
65°
29
84°
62°
30
87°
63°
31
78°
59°
1
73°
59°
2
71°
56°
3
69°
57°
4
69°
54°
5
66°
53°
6
69°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Acton
Acton's May 2026 forecast shows daily high temperatures ranging from 66° to 92°, with overnight lows between 53° and 65°. The average high for May is 77° with an average low of 58°. 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.
