S
M
T
W
T
F
S
26
52°
36°
27
71°
31°
28
63°
32°
29
64°
49°
30
67°
47°
1
64°
42°
2
62°
45°
3
60°
39°
4
75°
56°
5
83°
62°
6
71°
56°
7
61°
46°
8
65°
47°
9
66°
49°
10
67°
52°
11
69°
50°
12
67°
51°
13
68°
51°
14
69°
53°
15
70°
53°
16
73°
55°
17
76°
53°
18
76°
58°
19
75°
58°
20
75°
57°
21
76°
58°
22
73°
52°
23
70°
51°
24
68°
54°
25
70°
55°
26
71°
55°
27
70°
52°
28
70°
57°
29
71°
53°
30
71°
55°
31
72°
61°
1
76°
61°
2
73°
59°
3
73°
61°
4
77°
62°
5
76°
62°
6
77°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Marlboro
Marlboro's May 2026 forecast shows daily high temperatures ranging from 61° to 83°, with overnight lows between 46° and 62°. The average high for May is 72° with an average low of 55°. 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 Marlboro. See also: June | July | August.