S
M
T
W
T
F
S
30
79°
58°
31
77°
67°
1
78°
66°
2
75°
65°
3
84°
70°
4
83°
67°
5
79°
62°
6
72°
57°
7
79°
53°
8
79°
59°
9
79°
60°
10
86°
70°
11
77°
59°
12
75°
65°
13
76°
66°
14
76°
52°
15
70°
55°
16
77°
63°
17
80°
63°
18
79°
61°
19
73°
57°
20
70°
55°
21
72°
53°
22
72°
54°
23
70°
56°
24
71°
53°
25
72°
52°
26
66°
50°
27
67°
56°
28
74°
56°
29
74°
53°
30
67°
51°
1
66°
50°
2
68°
54°
3
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wading River
Wading River's September 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 50° and 66°. The average high for September is 72° with an average low of 56°. 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 Wading River. See also: October | November | December.