S
M
T
W
T
F
S
26
59°
39°
27
65°
36°
28
62°
37°
29
61°
44°
30
54°
46°
1
62°
46°
2
58°
41°
3
58°
38°
4
68°
46°
5
75°
55°
6
71°
58°
7
63°
43°
8
58°
40°
9
60°
43°
10
61°
47°
11
62°
46°
12
62°
45°
13
64°
46°
14
63°
48°
15
66°
45°
16
71°
51°
17
70°
50°
18
72°
51°
19
71°
50°
20
67°
50°
21
67°
51°
22
68°
51°
23
67°
48°
24
64°
47°
25
66°
47°
26
66°
52°
27
67°
50°
28
67°
48°
29
68°
47°
30
67°
50°
31
68°
54°
1
71°
53°
2
70°
50°
3
69°
54°
4
73°
55°
5
70°
54°
6
70°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Foxboro
Foxboro's May 2026 forecast shows daily high temperatures ranging from 58° to 75°, with overnight lows between 38° and 58°. The average high for May is 67° with an average low of 49°. 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 Foxboro. See also: June | July | August.