S
M
T
W
T
F
S
30
70°
49°
1
72°
52°
2
72°
43°
3
69°
55°
4
75°
51°
5
75°
43°
6
76°
44°
7
78°
45°
8
83°
48°
9
86°
47°
10
87°
48°
11
86°
49°
12
82°
49°
13
75°
49°
14
73°
50°
15
73°
47°
16
81°
46°
17
75°
48°
18
85°
48°
19
81°
50°
20
70°
49°
21
78°
52°
22
73°
49°
23
62°
52°
24
72°
61°
25
72°
56°
26
68°
49°
27
65°
48°
28
74°
41°
29
76°
43°
30
77°
55°
31
73°
60°
1
64°
59°
2
72°
59°
3
69°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Valley Center
Valley Center'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 Valley Center. See also: January | February | March.
