S
M
T
W
T
F
S
30
73°
52°
31
73°
51°
1
74°
55°
2
74°
59°
3
75°
60°
4
81°
61°
5
82°
59°
6
81°
52°
7
79°
51°
8
74°
51°
9
73°
50°
10
72°
52°
11
71°
53°
12
70°
51°
13
75°
54°
14
76°
56°
15
75°
55°
16
70°
53°
17
72°
54°
18
73°
53°
19
75°
47°
20
72°
49°
21
71°
47°
22
74°
45°
23
68°
45°
24
67°
46°
25
67°
48°
26
68°
44°
27
67°
45°
28
66°
47°
29
64°
42°
30
65°
42°
1
64°
48°
2
71°
43°
3
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westborough Town
Westborough Town's September 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 42° and 61°. The average high for September is 72° 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 Westborough Town. See also: October | November | December.
