S
M
T
W
T
F
S
30
81°
46°
31
87°
42°
1
77°
41°
2
73°
41°
3
74°
43°
4
76°
47°
5
78°
51°
6
84°
51°
7
84°
42°
8
74°
43°
9
73°
42°
10
73°
45°
11
74°
45°
12
81°
39°
13
71°
46°
14
74°
52°
15
81°
49°
16
82°
40°
17
72°
39°
18
69°
45°
19
74°
39°
20
74°
44°
21
69°
49°
22
77°
50°
23
77°
38°
24
75°
38°
25
64°
45°
26
72°
46°
27
74°
47°
28
73°
47°
29
74°
46°
30
74°
40°
1
71°
34°
2
62°
34°
3
61°
35°
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 61° to 87°, with overnight lows between 34° and 52°. The average high for September is 75° with an average low of 43°. 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.
