S
M
T
W
T
F
S
30
69°
46°
31
70°
48°
1
69°
49°
2
69°
46°
3
70°
45°
4
72°
48°
5
68°
45°
6
68°
44°
7
69°
45°
8
75°
45°
9
77°
48°
10
77°
52°
11
76°
51°
12
77°
52°
13
78°
52°
14
75°
43°
15
71°
44°
16
70°
50°
17
76°
51°
18
77°
45°
19
76°
48°
20
75°
50°
21
71°
50°
22
74°
49°
23
75°
47°
24
73°
49°
25
73°
52°
26
74°
51°
27
75°
49°
28
65°
46°
29
64°
47°
30
65°
47°
1
64°
45°
2
62°
41°
3
61°
42°
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 78°, with overnight lows between 41° and 52°. The average high for September is 71° with an average low of 47°. 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.
