S
M
T
W
T
F
S
30
79°
67°
31
79°
71°
1
87°
71°
2
80°
73°
3
87°
71°
4
82°
66°
5
76°
65°
6
75°
66°
7
79°
66°
8
80°
68°
9
80°
70°
10
81°
67°
11
81°
64°
12
75°
62°
13
75°
61°
14
79°
63°
15
73°
62°
16
73°
67°
17
75°
60°
18
71°
58°
19
71°
58°
20
72°
60°
21
75°
65°
22
78°
66°
23
79°
65°
24
78°
63°
25
76°
61°
26
76°
62°
27
77°
64°
28
77°
63°
29
76°
60°
30
70°
56°
1
66°
54°
2
69°
59°
3
74°
62°
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 66° to 87°, with overnight lows between 54° and 73°. 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.
