S
M
T
W
T
F
S
30
82°
55°
31
76°
61°
1
67°
59°
2
75°
58°
3
80°
62°
4
82°
61°
5
72°
58°
6
67°
50°
7
80°
53°
8
82°
59°
9
78°
70°
10
85°
62°
11
75°
51°
12
74°
56°
13
78°
59°
14
79°
57°
15
75°
57°
16
72°
50°
17
68°
52°
18
71°
53°
19
69°
51°
20
72°
54°
21
69°
54°
22
66°
54°
23
66°
53°
24
69°
53°
25
68°
52°
26
70°
51°
27
65°
49°
28
66°
51°
29
72°
52°
30
72°
52°
1
71°
51°
2
69°
52°
3
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Attleboro
Attleboro's September 2026 forecast shows daily high temperatures ranging from 65° to 85°, with overnight lows between 49° and 70°. The average high for September is 72° with an average low of 54°. 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 Attleboro. See also: October | November | December.
