S
M
T
W
T
F
S
29
61°
44°
30
62°
38°
1
53°
32°
2
46°
30°
3
50°
39°
4
55°
42°
5
51°
39°
6
47°
33°
7
47°
29°
8
44°
28°
9
44°
28°
10
45°
32°
11
50°
31°
12
55°
37°
13
52°
36°
14
49°
32°
15
48°
32°
16
45°
33°
17
46°
30°
18
44°
26°
19
43°
24°
20
41°
26°
21
44°
31°
22
50°
31°
23
44°
27°
24
42°
25°
25
42°
27°
26
43°
29°
27
42°
27°
28
44°
28°
29
43°
28°
30
43°
29°
31
45°
25°
1
41°
24°
2
41°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Castle
Castle's December 2026 forecast shows daily high temperatures ranging from 41° to 62°, with overnight lows between 24° and 44°. The average high for December is 47° with an average low of 31°. 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 Castle. See also: January | February | March.
