S
M
T
W
T
F
S
30
70°
49°
31
68°
49°
1
69°
54°
2
69°
58°
3
70°
57°
4
77°
58°
5
76°
56°
6
74°
49°
7
71°
49°
8
70°
48°
9
69°
47°
10
67°
47°
11
67°
48°
12
68°
47°
13
70°
52°
14
72°
54°
15
71°
52°
16
67°
49°
17
66°
50°
18
67°
52°
19
68°
44°
20
67°
47°
21
66°
44°
22
70°
43°
23
64°
42°
24
64°
43°
25
63°
49°
26
65°
42°
27
64°
48°
28
64°
48°
29
62°
40°
30
61°
43°
1
61°
48°
2
67°
45°
3
65°
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 61° to 77°, with overnight lows between 40° and 58°. 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.
