S
M
T
W
T
F
S
26
73°
46°
27
73°
50°
28
61°
46°
29
59°
39°
30
54°
36°
1
54°
32°
2
61°
30°
3
76°
44°
4
80°
45°
5
56°
37°
6
57°
36°
7
60°
36°
8
60°
41°
9
65°
44°
10
64°
46°
11
66°
45°
12
70°
47°
13
72°
48°
14
71°
47°
15
70°
47°
16
72°
48°
17
74°
53°
18
73°
53°
19
74°
51°
20
72°
53°
21
68°
45°
22
65°
44°
23
66°
45°
24
67°
45°
25
66°
46°
26
67°
46°
27
67°
47°
28
68°
47°
29
69°
53°
30
73°
57°
31
72°
54°
1
72°
52°
2
76°
57°
3
75°
57°
4
79°
59°
5
79°
60°
6
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hopkinton
Hopkinton's May 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 36° and 61°. The average high for May is 70° with an average low of 48°. 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 Hopkinton. See also: June | July | August.