S
M
T
W
T
F
S
30
72°
45°
31
78°
39°
1
81°
44°
2
83°
47°
3
76°
47°
4
80°
50°
5
76°
46°
6
80°
46°
7
70°
49°
8
69°
38°
9
78°
41°
10
86°
47°
11
67°
46°
12
63°
43°
13
52°
40°
14
63°
34°
15
68°
41°
16
65°
38°
17
66°
41°
18
73°
44°
19
75°
45°
20
75°
46°
21
73°
43°
22
70°
37°
23
62°
37°
24
68°
39°
25
60°
37°
26
62°
36°
27
71°
39°
28
62°
33°
29
62°
36°
30
59°
29°
1
64°
39°
2
65°
40°
3
68°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Manhattan
Manhattan's September 2026 forecast shows daily high temperatures ranging from 52° to 86°, with overnight lows between 29° and 47°. The average high for September is 67° with an average low of 40°. 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 Manhattan. See also: October | November | December.
