S
M
T
W
T
F
S
30
37°
25°
1
39°
17°
2
28°
20°
3
33°
19°
4
35°
5°
5
23°
-6°
6
37°
7°
7
37°
24°
8
27°
-6°
9
26°
-9°
10
38°
25°
11
40°
19°
12
33°
8°
13
35°
7°
14
29°
13°
15
25°
0°
16
34°
6°
17
44°
24°
18
47°
15°
19
58°
34°
20
35°
25°
21
42°
27°
22
32°
16°
23
33°
21°
24
34°
21°
25
32°
13°
26
16°
-1°
27
28°
3°
28
28°
1°
29
37°
27°
30
28°
18°
31
29°
14°
1
26°
2°
2
25°
1°
3
28°
6°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cornish Flat
Cornish Flat's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Cornish Flat. See also: January | February | March.
