S
M
T
W
T
F
S
30
98°
73°
31
98°
73°
1
98°
75°
2
100°
76°
3
92°
76°
4
92°
79°
5
97°
74°
6
N/A
7
93°
74°
8
95°
75°
9
94°
73°
10
94°
74°
11
97°
73°
12
96°
74°
13
95°
73°
14
94°
72°
15
90°
71°
16
93°
71°
17
92°
69°
18
93°
69°
19
91°
70°
20
89°
66°
21
91°
70°
22
91°
69°
23
90°
70°
24
89°
70°
25
87°
69°
26
89°
69°
27
89°
68°
28
88°
69°
29
89°
69°
30
87°
65°
1
83°
59°
2
79°
59°
3
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Hempstead
Hempstead's September 2026 forecast shows daily high temperatures ranging from 79° to 97°, with overnight lows between 58° and 75°. The average high for September is 90° with an average low of 69°. 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 Hempstead. See also: October | November | December.
