S
M
T
W
T
F
S
26
84°
64°
27
84°
61°
28
74°
65°
29
75°
66°
30
82°
63°
31
85°
60°
1
79°
63°
2
73°
67°
3
78°
59°
4
84°
56°
5
86°
58°
6
87°
64°
7
83°
66°
8
82°
66°
9
80°
65°
10
79°
62°
11
80°
60°
12
75°
56°
13
78°
55°
14
76°
55°
15
75°
53°
16
75°
54°
17
79°
59°
18
79°
55°
19
77°
57°
20
75°
55°
21
77°
52°
22
79°
52°
23
76°
61°
24
68°
58°
25
73°
55°
26
78°
58°
27
77°
56°
28
71°
51°
29
71°
56°
30
75°
59°
31
71°
57°
1
75°
56°
2
69°
55°
3
69°
55°
4
71°
54°
5
70°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gloucester
Gloucester's August 2026 forecast shows daily high temperatures ranging from 68° to 78°, with overnight lows between 51° and 59°. The average high for August is 72° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Gloucester. See also: September | October | November.