S
M
T
W
T
F
S
30
81°
70°
31
79°
72°
1
82°
71°
2
84°
74°
3
86°
68°
4
81°
66°
5
77°
65°
6
75°
65°
7
79°
64°
8
78°
66°
9
79°
68°
10
80°
63°
11
80°
63°
12
74°
60°
13
74°
59°
14
78°
61°
15
72°
61°
16
72°
65°
17
74°
58°
18
70°
56°
19
70°
56°
20
71°
59°
21
75°
63°
22
78°
64°
23
79°
64°
24
78°
61°
25
76°
59°
26
76°
61°
27
77°
62°
28
76°
62°
29
77°
58°
30
69°
54°
1
66°
53°
2
69°
57°
3
74°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Valley Stream
Valley Stream's September 2026 forecast shows daily high temperatures ranging from 66° to 86°, with overnight lows between 53° and 74°. The average high for September is 76° with an average low of 63°. 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 Valley Stream. See also: October | November | December.
