S
M
T
W
T
F
S
30
102°
79°
31
101°
75°
1
100°
76°
2
100°
77°
3
98°
76°
4
99°
75°
5
99°
72°
6
97°
73°
7
97°
70°
8
98°
69°
9
94°
64°
10
86°
62°
11
83°
54°
12
88°
66°
13
87°
66°
14
87°
64°
15
87°
65°
16
86°
64°
17
87°
65°
18
88°
65°
19
87°
64°
20
87°
64°
21
86°
63°
22
86°
64°
23
85°
63°
24
85°
62°
25
84°
62°
26
83°
61°
27
84°
60°
28
84°
60°
29
83°
59°
30
84°
60°
1
83°
60°
2
82°
59°
3
83°
59°
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 82° to 101°, with overnight lows between 54° and 77°. The average high for September is 89° with an average low of 65°. 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.
