S
M
T
W
T
F
S
30
78°
62°
31
77°
62°
1
78°
64°
2
78°
65°
3
77°
64°
4
78°
68°
5
77°
68°
6
79°
69°
7
84°
69°
8
83°
68°
9
81°
67°
10
79°
67°
11
80°
68°
12
79°
67°
13
81°
66°
14
75°
65°
15
74°
64°
16
73°
63°
17
73°
64°
18
77°
65°
19
75°
64°
20
76°
63°
21
83°
63°
22
82°
57°
23
80°
55°
24
72°
54°
25
71°
61°
26
72°
62°
27
76°
62°
28
78°
61°
29
79°
59°
30
78°
57°
1
77°
60°
2
77°
60°
3
78°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wantagh
Wantagh's September 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 54° and 69°. The average high for September is 78° with an average low of 63°. 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 Wantagh. See also: October | November | December.