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
64°
45°
8
61°
37°
9
53°
36°
10
70°
50°
11
61°
39°
12
62°
38°
13
63°
38°
14
59°
50°
15
54°
45°
16
78°
45°
17
87°
56°
18
69°
54°
19
94°
54°
20
88°
67°
21
70°
50°
22
60°
44°
23
60°
44°
24
54°
51°
25
76°
53°
26
80°
51°
27
85°
64°
28
70°
53°
29
69°
51°
30
49°
45°
31
62°
50°
1
59°
45°
2
61°
50°
3
64°
54°
4
74°
55°
5
80°
59°
6
77°
57°
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 49° to 80°, with overnight lows between 45° and 59°. The average high for May is 66° with an average low of 52°. 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.