S
M
T
W
T
F
S
30
74°
56°
31
73°
56°
1
73°
61°
2
74°
64°
3
75°
64°
4
81°
65°
5
81°
62°
6
79°
56°
7
75°
56°
8
74°
55°
9
73°
54°
10
71°
54°
11
72°
55°
12
71°
54°
13
75°
59°
14
76°
60°
15
75°
59°
16
71°
55°
17
70°
56°
18
71°
59°
19
72°
51°
20
71°
53°
21
71°
51°
22
75°
49°
23
68°
49°
24
68°
50°
25
69°
55°
26
69°
49°
27
68°
54°
28
68°
54°
29
66°
47°
30
66°
49°
1
65°
54°
2
71°
51°
3
69°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Briarcliff Manor
Briarcliff Manor's September 2026 forecast shows daily high temperatures ranging from 65° to 81°, with overnight lows between 47° and 65°. The average high for September is 72° with an average low of 55°. 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 Briarcliff Manor. See also: October | November | December.