S
M
T
W
T
F
S
30
78°
60°
31
78°
66°
1
78°
63°
2
69°
61°
3
83°
67°
4
82°
68°
5
78°
62°
6
73°
59°
7
77°
53°
8
78°
58°
9
81°
61°
10
84°
69°
11
77°
59°
12
75°
55°
13
77°
64°
14
73°
53°
15
69°
51°
16
78°
56°
17
81°
66°
18
79°
63°
19
69°
60°
20
68°
58°
21
68°
52°
22
63°
52°
23
65°
49°
24
62°
49°
25
66°
50°
26
69°
51°
27
69°
52°
28
70°
52°
29
71°
52°
30
73°
50°
1
72°
51°
2
74°
55°
3
66°
54°
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 62° to 74°, with overnight lows between 49° and 60°. The average high for September is 68° with an average low of 52°. 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.
