S
M
T
W
T
F
S
30
80°
61°
31
79°
69°
1
80°
66°
2
75°
69°
3
81°
69°
4
84°
66°
5
79°
63°
6
78°
64°
7
78°
65°
8
80°
62°
9
77°
64°
10
80°
63°
11
79°
65°
12
80°
64°
13
79°
61°
14
78°
62°
15
74°
60°
16
74°
65°
17
77°
60°
18
72°
57°
19
72°
56°
20
73°
61°
21
77°
64°
22
80°
65°
23
81°
64°
24
80°
62°
25
78°
62°
26
78°
61°
27
79°
62°
28
78°
62°
29
79°
60°
30
71°
55°
1
68°
55°
2
70°
60°
3
75°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Massapequa
Massapequa's September 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 55° and 69°. The average high for September is 77° with an average low of 62°. 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 Massapequa. See also: October | November | December.
