S
M
T
W
T
F
S
30
82°
55°
31
78°
61°
1
67°
60°
2
74°
60°
3
76°
61°
4
83°
57°
5
78°
54°
6
70°
51°
7
76°
54°
8
74°
55°
9
75°
57°
10
77°
56°
11
74°
55°
12
72°
53°
13
72°
51°
14
71°
53°
15
69°
51°
16
70°
55°
17
74°
53°
18
67°
49°
19
68°
49°
20
69°
52°
21
73°
55°
22
75°
55°
23
75°
54°
24
74°
53°
25
73°
52°
26
73°
52°
27
74°
53°
28
73°
52°
29
72°
50°
30
65°
45°
1
62°
45°
2
64°
50°
3
70°
50°
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 62° to 83°, with overnight lows between 45° and 61°. The average high for September is 72° with an average low of 53°. 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.
