S
M
T
W
T
F
S
28
83°
65°
29
65°
43°
30
56°
40°
31
66°
35°
1
74°
41°
2
84°
64°
3
79°
56°
4
67°
52°
5
77°
49°
6
82°
60°
7
80°
64°
8
81°
69°
9
81°
70°
10
73°
48°
11
65°
41°
12
61°
45°
13
57°
46°
14
70°
47°
15
60°
40°
16
76°
45°
17
59°
42°
18
57°
33°
19
68°
35°
20
66°
48°
21
68°
59°
22
66°
60°
23
65°
60°
24
61°
36°
25
36°
24°
26
40°
24°
27
52°
25°
28
60°
34°
29
70°
36°
30
55°
41°
31
48°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Pasadena
Pasadena's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January 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 January weather will actually feel in Pasadena. See also: February | March | April.