S
M
T
W
T
F
S
30
83°
55°
31
79°
56°
1
70°
59°
2
75°
59°
3
77°
61°
4
84°
60°
5
73°
56°
6
71°
50°
7
80°
47°
8
79°
52°
9
80°
52°
10
85°
67°
11
76°
49°
12
78°
42°
13
70°
63°
14
74°
44°
15
70°
54°
16
77°
57°
17
77°
63°
18
74°
55°
19
70°
50°
20
69°
48°
21
65°
47°
22
68°
49°
23
69°
50°
24
69°
48°
25
70°
48°
26
71°
47°
27
65°
52°
28
74°
52°
29
74°
51°
30
65°
48°
1
64°
50°
2
66°
50°
3
71°
49°
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 64° to 77°, with overnight lows between 44° and 63°. The average high for September is 70° 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 Westford. See also: October | November | December.
