S
M
T
W
T
F
S
30
72°
55°
31
72°
55°
1
70°
54°
2
68°
51°
3
66°
50°
4
66°
50°
5
67°
49°
6
69°
53°
7
70°
52°
8
70°
53°
9
69°
55°
10
70°
53°
11
68°
53°
12
66°
52°
13
66°
52°
14
65°
48°
15
63°
47°
16
63°
47°
17
64°
48°
18
63°
52°
19
63°
48°
20
62°
47°
21
62°
47°
22
63°
52°
23
65°
51°
24
66°
50°
25
66°
46°
26
62°
46°
27
61°
50°
28
60°
51°
29
61°
50°
30
60°
46°
1
59°
47°
2
59°
45°
3
60°
44°
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 59° to 72°, with overnight lows between 44° and 55°. The average high for September is 65° 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.
