S
M
T
W
T
F
S
30
94°
56°
31
86°
56°
1
71°
57°
2
73°
59°
3
69°
58°
4
77°
54°
5
82°
56°
6
83°
52°
7
90°
59°
8
95°
55°
9
103°
64°
10
100°
72°
11
97°
61°
12
90°
55°
13
83°
59°
14
90°
57°
15
91°
59°
16
90°
59°
17
89°
59°
18
90°
62°
19
89°
60°
20
89°
62°
21
91°
62°
22
93°
61°
23
92°
62°
24
88°
55°
25
82°
53°
26
84°
59°
27
81°
53°
28
81°
53°
29
83°
55°
30
88°
58°
1
89°
58°
2
89°
57°
3
88°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Corning
Corning's September 2026 forecast shows daily high temperatures ranging from 81° to 97°, with overnight lows between 53° and 62°. The average high for September is 88° 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 Corning. See also: October | November | December.