S
M
T
W
T
F
S
30
78°
67°
31
81°
70°
1
83°
70°
2
84°
68°
3
84°
65°
4
83°
70°
5
83°
68°
6
81°
65°
7
77°
67°
8
75°
68°
9
79°
62°
10
78°
60°
11
75°
68°
12
77°
63°
13
81°
67°
14
78°
66°
15
74°
67°
16
74°
60°
17
73°
64°
18
Hist. Avg.
76°
62°
19
Hist. Avg.
75°
61°
20
Hist. Avg.
75°
61°
21
Hist. Avg.
74°
61°
22
Hist. Avg.
74°
60°
23
Hist. Avg.
74°
60°
24
Hist. Avg.
73°
60°
25
Hist. Avg.
73°
59°
26
Hist. Avg.
72°
59°
27
Hist. Avg.
72°
58°
28
Hist. Avg.
72°
58°
29
Hist. Avg.
71°
58°
30
Hist. Avg.
71°
57°
1
Hist. Avg.
70°
57°
2
Hist. Avg.
70°
56°
3
Hist. Avg.
69°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in New York
New York's September 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 60° and 70°. The average high for September is 79° with an average low of 66°. 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 New York. See also: October | November | December.