S
M
T
W
T
F
S
29
51°
34°
30
50°
26°
1
39°
20°
2
36°
20°
3
43°
32°
4
44°
32°
5
42°
31°
6
38°
26°
7
36°
22°
8
34°
23°
9
39°
26°
10
43°
30°
11
44°
30°
12
48°
28°
13
45°
30°
14
41°
27°
15
42°
26°
16
42°
24°
17
39°
19°
18
36°
15°
19
34°
12°
20
31°
11°
21
29°
25°
22
37°
17°
23
38°
20°
24
37°
11°
25
32°
22°
26
33°
26°
27
38°
25°
28
38°
21°
29
37°
17°
30
34°
18°
31
32°
10°
1
32°
7°
2
29°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Corning
Corning's December 2026 forecast shows daily high temperatures ranging from 29° to 51°, with overnight lows between 7° and 34°. The average high for December is 38° with an average low of 22°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Corning. See also: January | February | March.