S
M
T
W
T
F
S
26
56°
41°
27
56°
42°
28
57°
40°
29
56°
39°
30
58°
39°
1
58°
46°
2
67°
45°
3
61°
43°
4
58°
41°
5
59°
38°
6
60°
41°
7
59°
42°
8
58°
43°
9
61°
42°
10
60°
40°
11
62°
42°
12
62°
45°
13
63°
41°
14
62°
44°
15
63°
42°
16
62°
42°
17
65°
51°
18
71°
51°
19
68°
50°
20
67°
48°
21
67°
51°
22
67°
45°
23
68°
47°
24
69°
46°
25
68°
49°
26
74°
53°
27
75°
52°
28
77°
54°
29
77°
54°
30
76°
53°
31
70°
54°
1
70°
55°
2
71°
55°
3
70°
51°
4
77°
52°
5
78°
57°
6
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Northborough
Northborough's May 2026 forecast shows daily high temperatures ranging from 56° to 78°, with overnight lows between 38° and 58°. The average high for May is 66° with an average low of 47°. 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 Northborough. See also: June | July | August.
