S
M
T
W
T
F
S
29
68°
47°
30
69°
40°
1
58°
34°
2
53°
33°
3
54°
38°
4
59°
44°
5
56°
38°
6
54°
34°
7
53°
34°
8
51°
31°
9
51°
30°
10
52°
31°
11
56°
33°
12
58°
38°
13
58°
40°
14
55°
35°
15
53°
33°
16
51°
36°
17
52°
33°
18
51°
29°
19
49°
28°
20
51°
30°
21
52°
31°
22
55°
30°
23
50°
29°
24
48°
28°
25
48°
29°
26
49°
31°
27
50°
31°
28
52°
32°
29
50°
29°
30
49°
30°
31
50°
28°
1
49°
28°
2
49°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Whitney
Whitney's December 2026 forecast shows daily high temperatures ranging from 48° to 69°, with overnight lows between 28° and 47°. The average high for December is 53° with an average low of 33°. 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 Whitney. See also: January | February | March.