S
M
T
W
T
F
S
30
80°
61°
31
79°
69°
1
78°
67°
2
74°
65°
3
88°
69°
4
85°
73°
5
80°
68°
6
73°
61°
7
79°
57°
8
80°
61°
9
80°
63°
10
87°
72°
11
79°
62°
12
77°
59°
13
79°
70°
14
75°
61°
15
70°
54°
16
75°
68°
17
79°
70°
18
81°
59°
19
71°
62°
20
70°
62°
21
73°
59°
22
67°
58°
23
70°
61°
24
74°
60°
25
76°
58°
26
74°
60°
27
74°
58°
28
73°
58°
29
75°
56°
30
71°
56°
1
69°
56°
2
76°
60°
3
69°
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 67° to 81°, with overnight lows between 56° and 70°. The average high for September is 73° with an average low of 60°. 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.