S
M
T
W
T
F
S
30
78°
56°
31
82°
59°
1
81°
52°
2
82°
53°
3
75°
52°
4
76°
53°
5
77°
59°
6
80°
56°
7
82°
52°
8
74°
55°
9
74°
58°
10
76°
57°
11
78°
56°
12
77°
56°
13
72°
55°
14
71°
50°
15
74°
49°
16
71°
49°
17
71°
51°
18
72°
52°
19
75°
53°
20
70°
55°
21
74°
53°
22
73°
46°
23
71°
51°
24
68°
54°
25
73°
50°
26
66°
49°
27
69°
51°
28
Hist. Avg.
70°
50°
29
Hist. Avg.
70°
49°
30
Hist. Avg.
69°
49°
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
*Temporarily Unavailable
September Weather in Middleborough
Middleborough's September 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 46° and 59°. The average high for September is 75° 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 Middleborough. See also: October | November | December.