S
M
T
W
T
F
S
30
75°
59°
31
76°
56°
1
75°
52°
2
70°
50°
3
69°
49°
4
70°
50°
5
70°
51°
6
74°
58°
7
77°
57°
8
76°
57°
9
77°
56°
10
77°
56°
11
74°
55°
12
77°
56°
13
77°
58°
14
78°
47°
15
66°
49°
16
65°
46°
17
67°
48°
18
69°
46°
19
66°
47°
20
66°
47°
21
73°
51°
22
74°
51°
23
74°
43°
24
67°
40°
25
65°
44°
26
71°
49°
27
72°
50°
28
70°
44°
29
67°
38°
30
61°
40°
1
61°
47°
2
66°
43°
3
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oneida
Oneida's September 2026 forecast shows daily high temperatures ranging from 61° to 78°, with overnight lows between 38° and 59°. The average high for September is 71° with an average low of 50°. 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 Oneida. See also: October | November | December.