S
M
T
W
T
F
S
30
83°
56°
31
75°
54°
1
75°
55°
2
76°
61°
3
76°
55°
4
77°
62°
5
79°
61°
6
81°
55°
7
79°
54°
8
73°
54°
9
73°
53°
10
74°
59°
11
74°
53°
12
76°
53°
13
72°
52°
14
71°
58°
15
74°
59°
16
77°
50°
17
78°
49°
18
69°
49°
19
68°
50°
20
69°
50°
21
68°
51°
22
67°
49°
23
66°
53°
24
68°
54°
25
68°
53°
26
73°
54°
27
73°
49°
28
74°
46°
29
66°
46°
30
65°
52°
1
66°
53°
2
69°
51°
3
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westhampton
Westhampton's September 2026 forecast shows daily high temperatures ranging from 65° to 83°, with overnight lows between 46° and 62°. The average high for September is 73° 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 Westhampton. See also: October | November | December.
