S
M
T
W
T
F
S
29
70°
50°
30
65°
45°
1
65°
44°
2
64°
44°
3
64°
44°
4
65°
50°
5
65°
51°
6
69°
47°
7
68°
42°
8
65°
44°
9
66°
45°
10
66°
48°
11
70°
49°
12
71°
46°
13
71°
40°
14
64°
39°
15
61°
41°
16
62°
41°
17
62°
42°
18
61°
43°
19
64°
47°
20
64°
47°
21
65°
43°
22
66°
48°
23
66°
41°
24
64°
43°
25
64°
44°
26
66°
43°
27
64°
42°
28
66°
44°
29
65°
50°
30
68°
46°
31
70°
43°
1
69°
42°
2
66°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in South Pasadena
South Pasadena's December 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 39° and 51°. The average high for December is 66° 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 South Pasadena. See also: January | February | March.
