S
M
T
W
T
F
S
30
79°
67°
31
78°
69°
1
82°
67°
2
71°
65°
3
84°
67°
4
84°
71°
5
79°
68°
6
76°
64°
7
82°
67°
8
83°
70°
9
83°
72°
10
86°
69°
11
80°
64°
12
78°
68°
13
82°
69°
14
83°
67°
15
80°
66°
16
76°
63°
17
77°
64°
18
76°
64°
19
76°
63°
20
75°
61°
21
77°
65°
22
70°
65°
23
70°
64°
24
71°
64°
25
72°
61°
26
75°
60°
27
71°
57°
28
71°
61°
29
75°
63°
30
76°
63°
1
76°
62°
2
74°
63°
3
73°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brooklyn
Brooklyn's September 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 57° and 72°. The average high for September is 77° with an average low of 64°. 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 Brooklyn. See also: October | November | December.
