S
M
T
W
T
F
S
30
76°
53°
31
77°
54°
1
74°
52°
2
74°
53°
3
75°
55°
4
73°
54°
5
74°
52°
6
75°
53°
7
73°
52°
8
74°
51°
9
72°
51°
10
72°
57°
11
73°
51°
12
74°
50°
13
76°
49°
14
74°
55°
15
74°
54°
16
72°
49°
17
69°
48°
18
70°
48°
19
70°
54°
20
71°
54°
21
74°
53°
22
71°
52°
23
74°
52°
24
73°
50°
25
71°
52°
26
66°
45°
27
72°
45°
28
65°
44°
29
64°
45°
30
63°
44°
1
Hist. Avg.
69°
48°
2
Hist. Avg.
69°
48°
3
Hist. Avg.
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Middleboro
Middleboro's September 2026 forecast shows daily high temperatures ranging from 63° to 77°, with overnight lows between 44° and 57°. The average high for September is 72° with an average low of 51°. 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 Middleboro. See also: October | November | December.