S
M
T
W
T
F
S
30
77°
66°
31
82°
68°
1
83°
62°
2
81°
61°
3
76°
60°
4
77°
62°
5
77°
68°
6
81°
67°
7
83°
64°
8
76°
66°
9
75°
67°
10
78°
66°
11
78°
65°
12
79°
65°
13
76°
64°
14
73°
58°
15
73°
58°
16
74°
57°
17
73°
59°
18
72°
63°
19
75°
63°
20
76°
64°
21
78°
60°
22
73°
56°
23
71°
61°
24
70°
63°
25
76°
57°
26
75°
54°
27
Hist. Avg.
72°
57°
28
Hist. Avg.
72°
57°
29
Hist. Avg.
71°
56°
30
Hist. Avg.
71°
56°
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
*Temporarily Unavailable
September Weather in Valley Stream
Valley Stream's September 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 54° and 68°. The average high for September is 76° with an average low of 62°. 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.
