S
M
T
W
T
F
S
29
60°
42°
30
62°
56°
1
66°
54°
2
63°
52°
3
61°
53°
4
61°
49°
5
60°
46°
6
63°
53°
7
68°
47°
8
61°
41°
9
63°
51°
10
67°
54°
11
75°
40°
12
74°
36°
13
59°
39°
14
58°
40°
15
57°
38°
16
59°
42°
17
59°
52°
18
68°
53°
19
73°
49°
20
72°
51°
21
72°
52°
22
71°
55°
23
74°
39°
24
74°
35°
25
67°
35°
26
55°
39°
27
58°
51°
28
67°
53°
29
70°
53°
30
70°
54°
31
71°
50°
1
73°
44°
2
72°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Pasadena
Pasadena's December 2026 forecast shows daily high temperatures ranging from 55° to 75°, with overnight lows between 35° and 56°. The average high for December is 66° with an average low of 47°. 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 Pasadena. See also: January | February | March.
