S
M
T
W
T
F
S
30
96°
70°
31
97°
71°
1
96°
70°
2
96°
71°
3
97°
72°
4
96°
69°
5
91°
70°
6
95°
71°
7
96°
72°
8
Hist. Avg.
90°
69°
9
Hist. Avg.
90°
68°
10
Hist. Avg.
90°
68°
11
Hist. Avg.
90°
68°
12
Hist. Avg.
89°
68°
13
Hist. Avg.
89°
67°
14
Hist. Avg.
89°
67°
15
Hist. Avg.
88°
67°
16
Hist. Avg.
88°
67°
17
Hist. Avg.
88°
66°
18
Hist. Avg.
88°
66°
19
Hist. Avg.
87°
66°
20
Hist. Avg.
87°
65°
21
Hist. Avg.
86°
65°
22
Hist. Avg.
86°
65°
23
Hist. Avg.
86°
64°
24
Hist. Avg.
86°
64°
25
Hist. Avg.
85°
64°
26
Hist. Avg.
85°
64°
27
Hist. Avg.
85°
63°
28
Hist. Avg.
84°
63°
29
Hist. Avg.
84°
63°
30
Hist. Avg.
84°
62°
1
Hist. Avg.
84°
62°
2
Hist. Avg.
83°
62°
3
Hist. Avg.
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Briarcliff
Briarcliff's September 2026 forecast shows daily high temperatures ranging from 91° to 97°, with overnight lows between 69° and 72°. The average high for September is 96° with an average low of 71°. 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. See also: October | November | December.