S
M
T
W
T
F
S
30
73°
52°
31
67°
46°
1
64°
50°
2
67°
39°
3
72°
35°
4
68°
51°
5
55°
47°
6
54°
48°
7
59°
45°
8
61°
43°
9
60°
45°
10
62°
52°
11
61°
51°
12
57°
45°
13
59°
45°
14
61°
47°
15
62°
49°
16
65°
47°
17
62°
43°
18
60°
47°
19
62°
45°
20
57°
43°
21
59°
47°
22
61°
46°
23
60°
46°
24
61°
45°
25
55°
45°
26
57°
44°
27
60°
46°
28
59°
46°
29
58°
44°
30
59°
42°
1
58°
43°
2
55°
43°
3
51°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pasadena
Pasadena's September 2026 forecast shows daily high temperatures ranging from 51° to 68°, with overnight lows between 41° and 52°. The average high for September is 59° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Pasadena. See also: October | November | December.
