S
M
T
W
T
F
S
30
82°
69°
31
78°
71°
1
80°
68°
2
70°
67°
3
87°
71°
4
85°
66°
5
80°
63°
6
75°
64°
7
77°
65°
8
81°
66°
9
79°
68°
10
82°
64°
11
76°
63°
12
77°
63°
13
78°
65°
14
78°
61°
15
76°
60°
16
73°
64°
17
75°
57°
18
72°
56°
19
79°
61°
20
79°
61°
21
77°
58°
22
76°
58°
23
72°
62°
24
77°
59°
25
74°
57°
26
77°
62°
27
76°
61°
28
74°
54°
29
67°
52°
30
68°
53°
1
67°
51°
2
66°
54°
3
65°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Rochelle
New Rochelle's September 2026 forecast shows daily high temperatures ranging from 65° to 87°, with overnight lows between 51° and 71°. The average high for September is 75° with an average low of 61°. 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 Rochelle. See also: October | November | December.
