S
M
T
W
T
F
S
30
62°
51°
31
63°
51°
1
65°
56°
2
65°
60°
3
64°
61°
4
73°
60°
5
74°
56°
6
67°
50°
7
62°
49°
8
63°
52°
9
65°
48°
10
63°
51°
11
64°
49°
12
62°
49°
13
64°
56°
14
70°
55°
15
65°
54°
16
59°
53°
17
60°
54°
18
61°
51°
19
63°
46°
20
59°
50°
21
62°
44°
22
59°
44°
23
58°
43°
24
57°
43°
25
57°
47°
26
58°
42°
27
56°
49°
28
58°
47°
29
55°
41°
30
54°
44°
1
55°
46°
2
62°
43°
3
55°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westford
Westford's September 2026 forecast shows daily high temperatures ranging from 54° to 74°, with overnight lows between 40° and 61°. The average high for September is 62° 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 Westford. See also: October | November | December.
