S
M
T
W
T
F
S
26
64°
45°
27
64°
46°
28
75°
38°
29
79°
43°
30
84°
48°
1
86°
52°
2
88°
51°
3
75°
50°
4
65°
50°
5
61°
48°
6
77°
53°
7
86°
57°
8
87°
57°
9
89°
58°
10
93°
58°
11
93°
60°
12
89°
59°
13
83°
58°
14
84°
56°
15
83°
56°
16
82°
55°
17
81°
56°
18
82°
54°
19
85°
58°
20
85°
58°
21
84°
57°
22
85°
58°
23
87°
59°
24
87°
59°
25
86°
58°
26
86°
59°
27
85°
58°
28
80°
57°
29
79°
56°
30
80°
56°
31
81°
58°
1
82°
59°
2
85°
60°
3
84°
59°
4
84°
58°
5
83°
57°
6
82°
56°
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 61° to 93°, with overnight lows between 48° and 60°. The average high for May is 84° with an average low of 57°. 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.
