S
M
T
W
T
F
S
30
79°
67°
31
78°
69°
1
82°
67°
2
71°
65°
3
84°
67°
4
84°
71°
5
79°
68°
6
76°
64°
7
78°
61°
8
80°
62°
9
82°
68°
10
84°
69°
11
79°
67°
12
78°
63°
13
79°
68°
14
75°
63°
15
72°
61°
16
78°
68°
17
81°
69°
18
81°
59°
19
68°
63°
20
70°
60°
21
70°
60°
22
68°
58°
23
69°
59°
24
71°
60°
25
72°
60°
26
70°
58°
27
72°
59°
28
71°
54°
29
75°
60°
30
69°
56°
1
68°
57°
2
70°
61°
3
73°
57°
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 68° to 81°, with overnight lows between 54° and 69°. The average high for September is 72° with an average low of 60°. 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.
