S
M
T
W
T
F
S
30
84°
67°
31
84°
70°
1
83°
67°
2
84°
69°
3
83°
69°
4
83°
68°
5
82°
68°
6
81°
67°
7
80°
67°
8
81°
68°
9
81°
67°
10
80°
67°
11
81°
66°
12
82°
67°
13
81°
68°
14
81°
67°
15
79°
67°
16
80°
66°
17
79°
66°
18
77°
64°
19
75°
56°
20
71°
61°
21
72°
64°
22
73°
56°
23
71°
56°
24
70°
58°
25
71°
62°
26
75°
60°
27
70°
57°
28
69°
55°
29
68°
55°
30
68°
56°
1
69°
62°
2
69°
60°
3
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in East Flatbush
East Flatbush's September 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 52° and 70°. The average high for September is 77° with an average low of 63°. 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 East Flatbush. See also: October | November | December.