S
M
T
W
T
F
S
26
61°
38°
27
67°
32°
28
62°
34°
29
59°
45°
30
54°
45°
1
63°
43°
2
57°
46°
3
54°
37°
4
73°
53°
5
83°
51°
6
74°
57°
7
64°
44°
8
61°
34°
9
54°
33°
10
74°
49°
11
62°
37°
12
63°
35°
13
65°
38°
14
63°
52°
15
54°
44°
16
78°
42°
17
87°
56°
18
75°
52°
19
96°
59°
20
89°
68°
21
69°
48°
22
64°
40°
23
65°
44°
24
52°
49°
25
72°
54°
26
83°
64°
27
86°
55°
28
73°
54°
29
70°
49°
30
67°
48°
31
72°
48°
1
74°
52°
2
71°
52°
3
80°
55°
4
80°
56°
5
81°
58°
6
79°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Boxborough
Boxborough's May 2026 forecast shows daily high temperatures ranging from 52° to 86°, with overnight lows between 48° and 64°. The average high for May is 74° with an average low of 53°. 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 Boxborough. See also: June | July | August.
