S
M
T
W
T
F
S
30
79°
64°
31
83°
66°
1
85°
60°
2
83°
59°
3
78°
58°
4
79°
60°
5
78°
67°
6
83°
65°
7
85°
62°
8
77°
65°
9
76°
65°
10
80°
64°
11
79°
63°
12
80°
63°
13
78°
62°
14
75°
57°
15
75°
57°
16
74°
56°
17
74°
57°
18
75°
62°
19
78°
62°
20
77°
63°
21
79°
59°
22
75°
54°
23
73°
60°
24
72°
62°
25
78°
56°
26
77°
53°
27
Hist. Avg.
73°
60°
28
Hist. Avg.
73°
60°
29
Hist. Avg.
72°
60°
30
Hist. Avg.
72°
59°
1
Hist. Avg.
72°
59°
2
Hist. Avg.
71°
58°
3
Hist. Avg.
71°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Great Neck
Great Neck's September 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 53° and 67°. The average high for September is 78° with an average low of 61°. 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 Great Neck. See also: October | November | December.