S
M
T
W
T
F
S
30
80°
52°
31
N/A
1
76°
65°
2
73°
66°
3
78°
66°
4
81°
62°
5
76°
58°
6
75°
58°
7
79°
60°
8
76°
61°
9
78°
64°
10
77°
60°
11
76°
62°
12
78°
62°
13
77°
60°
14
75°
58°
15
71°
56°
16
71°
61°
17
74°
56°
18
69°
53°
19
69°
52°
20
70°
56°
21
73°
60°
22
76°
60°
23
77°
59°
24
76°
58°
25
74°
57°
26
74°
57°
27
75°
58°
28
74°
58°
29
75°
55°
30
67°
51°
1
64°
50°
2
66°
55°
3
72°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Suffolk
New Suffolk's September 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 50° and 66°. The average high for September is 74° with an average low of 58°. 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 Suffolk. See also: October | November | December.
