S
M
T
W
T
F
S
30
79°
60°
31
79°
60°
1
78°
61°
2
79°
61°
3
78°
62°
4
77°
61°
5
79°
61°
6
78°
60°
7
77°
59°
8
76°
58°
9
76°
59°
10
77°
64°
11
76°
57°
12
75°
58°
13
78°
57°
14
79°
63°
15
77°
63°
16
77°
60°
17
74°
56°
18
74°
56°
19
75°
57°
20
78°
62°
21
75°
56°
22
73°
58°
23
76°
60°
24
77°
61°
25
78°
60°
26
73°
53°
27
75°
54°
28
69°
53°
29
68°
52°
30
68°
52°
1
Hist. Avg.
70°
56°
2
Hist. Avg.
70°
55°
3
Hist. Avg.
70°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Hempstead
South Hempstead's September 2026 forecast shows daily high temperatures ranging from 68° to 79°, with overnight lows between 52° and 64°. The average high for September is 76° with an average low of 59°. 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 South Hempstead. See also: October | November | December.
