S
M
T
W
T
F
S
30
83°
65°
31
83°
65°
1
82°
60°
2
75°
57°
3
74°
57°
4
75°
56°
5
75°
56°
6
79°
61°
7
82°
63°
8
81°
62°
9
78°
62°
10
80°
63°
11
82°
62°
12
82°
63°
13
81°
64°
14
81°
53°
15
74°
53°
16
71°
54°
17
73°
53°
18
71°
51°
19
72°
52°
20
71°
52°
21
77°
54°
22
77°
58°
23
76°
50°
24
77°
49°
25
72°
49°
26
69°
51°
27
73°
56°
28
73°
56°
29
75°
47°
30
71°
48°
1
67°
53°
2
68°
53°
3
71°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sleepy Hollow
Sleepy Hollow's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 47° and 65°. The average high for September is 76° with an average low of 56°. 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 Sleepy Hollow. See also: October | November | December.
