S
M
T
W
T
F
S
30
77°
55°
31
78°
53°
1
74°
53°
2
74°
52°
3
75°
58°
4
73°
54°
5
78°
51°
6
74°
50°
7
72°
51°
8
72°
52°
9
73°
51°
10
76°
57°
11
77°
55°
12
71°
55°
13
70°
57°
14
77°
56°
15
Hist. Avg.
75°
53°
16
Hist. Avg.
74°
52°
17
Hist. Avg.
74°
52°
18
Hist. Avg.
74°
52°
19
Hist. Avg.
73°
51°
20
Hist. Avg.
73°
51°
21
Hist. Avg.
72°
50°
22
Hist. Avg.
72°
50°
23
Hist. Avg.
72°
50°
24
Hist. Avg.
71°
49°
25
Hist. Avg.
71°
49°
26
Hist. Avg.
70°
48°
27
Hist. Avg.
70°
48°
28
Hist. Avg.
70°
48°
29
Hist. Avg.
69°
47°
30
Hist. Avg.
69°
47°
1
Hist. Avg.
68°
46°
2
Hist. Avg.
68°
46°
3
Hist. Avg.
68°
46°
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 70° to 78°, with overnight lows between 50° and 58°. The average high for September is 74° with an average low of 54°. 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.
