S
M
T
W
T
F
S
29
46°
37°
30
49°
40°
1
48°
39°
2
49°
36°
3
43°
34°
4
43°
33°
5
44°
33°
6
43°
34°
7
45°
38°
8
48°
38°
9
47°
39°
10
48°
39°
11
49°
40°
12
49°
39°
13
47°
39°
14
45°
34°
15
47°
32°
16
46°
33°
17
43°
32°
18
43°
32°
19
44°
34°
20
43°
37°
21
47°
39°
22
49°
38°
23
49°
39°
24
48°
39°
25
49°
38°
26
49°
38°
27
47°
37°
28
48°
38°
29
47°
37°
30
48°
39°
31
49°
38°
1
50°
36°
2
48°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Whitehaven
Whitehaven's December 2026 forecast shows daily high temperatures ranging from 43° to 50°, with overnight lows between 32° and 40°. The average high for December is 47° with an average low of 37°. 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 Whitehaven. See also: January | February | March.
