S
M
T
W
T
F
S
29
70°
51°
30
66°
47°
1
64°
47°
2
65°
48°
3
64°
47°
4
64°
50°
5
64°
49°
6
70°
46°
7
66°
42°
8
64°
44°
9
65°
45°
10
64°
48°
11
69°
49°
12
70°
45°
13
69°
41°
14
62°
39°
15
60°
41°
16
61°
41°
17
60°
42°
18
60°
44°
19
62°
47°
20
63°
45°
21
63°
42°
22
64°
48°
23
63°
42°
24
62°
43°
25
62°
44°
26
64°
43°
27
63°
42°
28
64°
45°
29
65°
51°
30
66°
46°
31
69°
43°
1
67°
44°
2
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Porter Ranch
Porter Ranch's December 2026 forecast shows daily high temperatures ranging from 60° to 70°, with overnight lows between 39° and 51°. The average high for December is 65° with an average low of 45°. 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 Porter Ranch. See also: January | February | March.
