S
M
T
W
T
F
S
26
65°
53°
27
64°
49°
28
68°
46°
29
71°
54°
30
68°
53°
1
65°
51°
2
63°
52°
3
66°
49°
4
72°
48°
5
75°
60°
6
78°
65°
7
73°
54°
8
69°
52°
9
74°
61°
10
76°
64°
11
78°
56°
12
69°
51°
13
75°
55°
14
77°
58°
15
72°
54°
16
76°
56°
17
79°
68°
18
81°
71°
19
80°
69°
20
80°
70°
21
82°
69°
22
79°
70°
23
81°
72°
24
81°
71°
25
82°
71°
26
83°
71°
27
85°
70°
28
81°
67°
29
82°
65°
30
80°
64°
31
81°
67°
1
82°
65°
2
79°
69°
3
80°
69°
4
81°
68°
5
79°
69°
6
80°
69°
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 79° to 85°, with overnight lows between 64° and 72°. The average high for May is 81° with an average low of 69°. 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.