S
M
T
W
T
F
S
26
58°
31°
27
71°
48°
28
57°
49°
29
57°
44°
30
55°
33°
1
50°
32°
2
46°
36°
3
49°
38°
4
53°
40°
5
58°
43°
6
56°
41°
7
57°
42°
8
56°
40°
9
57°
43°
10
56°
42°
11
60°
42°
12
63°
48°
13
62°
42°
14
56°
39°
15
56°
38°
16
57°
40°
17
58°
41°
18
59°
46°
19
66°
45°
20
58°
43°
21
58°
41°
22
59°
42°
23
59°
41°
24
60°
48°
25
61°
47°
26
62°
43°
27
60°
43°
28
61°
46°
29
67°
52°
30
71°
50°
31
66°
47°
1
68°
51°
2
72°
55°
3
73°
55°
4
74°
50°
5
64°
48°
6
65°
49°
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 46° to 74°, with overnight lows between 32° and 55°. The average high for May is 60° with an average low of 44°. 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.