S
M
T
W
T
F
S
26
75°
64°
27
81°
59°
28
84°
66°
29
88°
59°
30
81°
59°
31
N/A
1
77°
49°
2
82°
57°
3
86°
60°
4
80°
59°
5
78°
55°
6
77°
57°
7
73°
55°
8
72°
54°
9
76°
56°
10
78°
58°
11
77°
57°
12
78°
56°
13
75°
56°
14
74°
58°
15
75°
58°
16
75°
57°
17
74°
58°
18
73°
57°
19
73°
57°
20
72°
56°
21
72°
56°
22
69°
54°
23
69°
56°
24
70°
56°
25
69°
55°
26
70°
55°
27
71°
56°
28
71°
54°
29
68°
55°
30
66°
55°
31
67°
51°
1
65°
50°
2
65°
54°
3
66°
51°
4
65°
49°
5
64°
49°
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 64° to 86°, with overnight lows between 49° and 60°. The average high for August is 73° 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 August weather will actually feel in Gloucester. See also: September | October | November.