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
78°
61°
8
80°
62°
9
82°
68°
10
84°
69°
11
79°
67°
12
78°
63°
13
79°
68°
14
78°
60°
15
73°
64°
16
78°
70°
17
82°
72°
18
83°
67°
19
75°
65°
20
73°
62°
21
75°
64°
22
74°
63°
23
70°
59°
24
69°
60°
25
74°
60°
26
72°
61°
27
72°
63°
28
76°
62°
29
76°
60°
30
70°
56°
1
68°
57°
2
70°
61°
3
74°
58°
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 68° to 83°, with overnight lows between 56° and 72°. The average high for September is 74° with an average low of 62°. 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.
