S
M
T
W
T
F
S
26
58°
37°
27
64°
34°
28
55°
36°
29
51°
44°
30
54°
44°
1
62°
44°
2
57°
41°
3
54°
39°
4
72°
41°
5
80°
51°
6
70°
57°
7
62°
44°
8
57°
44°
9
52°
48°
10
63°
50°
11
54°
46°
12
59°
38°
13
59°
42°
14
59°
41°
15
63°
47°
16
68°
46°
17
65°
46°
18
65°
47°
19
67°
46°
20
65°
44°
21
61°
41°
22
61°
42°
23
62°
44°
24
63°
49°
25
66°
50°
26
70°
50°
27
69°
45°
28
64°
43°
29
63°
46°
30
66°
47°
31
71°
52°
1
70°
52°
2
67°
51°
3
68°
52°
4
72°
53°
5
72°
53°
6
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gloucester
Gloucester's May 2026 forecast shows daily high temperatures ranging from 52° to 73°, with overnight lows between 38° and 53°. The average high for May is 64° 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 Gloucester. See also: June | July | August.