S
M
T
W
T
F
S
30
76°
54°
31
72°
58°
1
79°
66°
2
66°
61°
3
81°
62°
4
78°
63°
5
75°
57°
6
74°
53°
7
75°
48°
8
77°
48°
9
77°
54°
10
76°
53°
11
69°
44°
12
75°
62°
13
76°
55°
14
68°
47°
15
72°
58°
16
71°
54°
17
69°
51°
18
64°
48°
19
63°
47°
20
62°
47°
21
63°
46°
22
63°
47°
23
65°
44°
24
63°
49°
25
59°
39°
26
59°
42°
27
64°
48°
28
67°
44°
29
60°
38°
30
62°
47°
1
63°
44°
2
58°
40°
3
63°
46°
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 58° to 76°, with overnight lows between 38° and 62°. The average high for September is 66° 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.
