S
M
T
W
T
F
S
30
70°
50°
31
74°
53°
1
77°
46°
2
72°
47°
3
69°
46°
4
70°
50°
5
72°
55°
6
75°
53°
7
75°
50°
8
69°
52°
9
67°
54°
10
70°
52°
11
69°
50°
12
71°
52°
13
69°
50°
14
66°
44°
15
65°
44°
16
65°
42°
17
66°
45°
18
65°
50°
19
68°
50°
20
69°
51°
21
70°
46°
22
64°
41°
23
63°
47°
24
62°
48°
25
68°
41°
26
64°
39°
27
Hist. Avg.
66°
44°
28
Hist. Avg.
65°
44°
29
Hist. Avg.
65°
44°
30
Hist. Avg.
64°
43°
1
Hist. Avg.
64°
43°
2
Hist. Avg.
64°
42°
3
Hist. Avg.
63°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Brooklyn
Brooklyn's September 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 39° and 55°. The average high for September is 69° with an average low of 48°. 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.
