S
M
T
W
T
F
S
30
75°
55°
31
74°
53°
1
75°
57°
2
75°
61°
3
76°
63°
4
83°
63°
5
84°
62°
6
82°
55°
7
81°
53°
8
75°
55°
9
74°
53°
10
73°
55°
11
73°
57°
12
72°
55°
13
75°
54°
14
76°
58°
15
76°
58°
16
72°
56°
17
74°
57°
18
76°
56°
19
76°
50°
20
74°
53°
21
73°
50°
22
76°
48°
23
69°
48°
24
69°
49°
25
68°
50°
26
68°
47°
27
69°
47°
28
67°
49°
29
66°
45°
30
67°
45°
1
65°
49°
2
72°
47°
3
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Attleboro
South Attleboro's September 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 45° and 63°. The average high for September is 73° with an average low of 53°. 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 South Attleboro. See also: October | November | December.
