S
M
T
W
T
F
S
30
80°
50°
31
71°
49°
1
71°
50°
2
70°
55°
3
71°
50°
4
72°
57°
5
76°
56°
6
77°
49°
7
74°
49°
8
69°
48°
9
69°
47°
10
68°
54°
11
71°
47°
12
72°
48°
13
66°
47°
14
67°
53°
15
71°
54°
16
74°
45°
17
74°
43°
18
65°
43°
19
63°
45°
20
64°
45°
21
64°
46°
22
62°
44°
23
62°
48°
24
63°
49°
25
63°
49°
26
69°
50°
27
69°
44°
28
70°
41°
29
61°
41°
30
60°
48°
1
61°
49°
2
65°
46°
3
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Hempstead
New Hempstead's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 41° and 57°. The average high for September is 68° with an average low of 48°. 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 New Hempstead. See also: October | November | December.
