S
M
T
W
T
F
S
30
82°
67°
31
87°
68°
1
87°
69°
2
88°
71°
3
82°
70°
4
86°
69°
5
80°
63°
6
81°
58°
7
80°
55°
8
83°
69°
9
79°
58°
10
76°
52°
11
78°
62°
12
80°
57°
13
78°
60°
14
77°
56°
15
71°
51°
16
69°
50°
17
68°
48°
18
71°
49°
19
70°
47°
20
67°
50°
21
70°
47°
22
69°
53°
23
72°
52°
24
75°
53°
25
75°
53°
26
74°
52°
27
74°
53°
28
76°
53°
29
75°
52°
30
74°
53°
1
70°
47°
2
64°
42°
3
61°
39°
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 61° to 83°, with overnight lows between 39° and 69°. The average high for September is 73° with an average low of 52°. 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.
