S
M
T
W
T
F
S
30
75°
59°
31
71°
57°
1
75°
56°
2
69°
55°
3
69°
55°
4
71°
54°
5
70°
55°
6
69°
52°
7
76°
56°
8
75°
57°
9
74°
56°
10
71°
55°
11
70°
55°
12
74°
54°
13
71°
51°
14
69°
51°
15
71°
53°
16
73°
53°
17
73°
54°
18
69°
48°
19
60°
46°
20
61°
47°
21
67°
52°
22
66°
51°
23
69°
48°
24
60°
44°
25
58°
42°
26
58°
40°
27
59°
43°
28
59°
45°
29
63°
42°
30
65°
44°
1
65°
43°
2
56°
41°
3
54°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gloucester
Gloucester's September 2026 forecast shows daily high temperatures ranging from 54° to 76°, with overnight lows between 40° and 59°. The average high for September is 67° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Gloucester. See also: October | November | December.
