S
M
T
W
T
F
S
30
66°
55°
31
67°
50°
1
67°
49°
2
66°
54°
3
65°
48°
4
70°
48°
5
65°
49°
6
66°
51°
7
69°
52°
8
68°
54°
9
70°
51°
10
67°
52°
11
67°
53°
12
68°
52°
13
69°
52°
14
68°
53°
15
69°
51°
16
68°
50°
17
65°
52°
18
66°
51°
19
67°
45°
20
62°
45°
21
63°
44°
22
62°
45°
23
61°
50°
24
64°
51°
25
63°
52°
26
65°
51°
27
66°
50°
28
65°
49°
29
60°
48°
30
60°
44°
1
59°
43°
2
59°
42°
3
61°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westbury
Westbury's September 2026 forecast shows daily high temperatures ranging from 59° to 70°, with overnight lows between 42° and 55°. The average high for September is 65° with an average low of 49°. 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 Westbury. See also: October | November | December.
