S
M
T
W
T
F
S
30
94°
66°
31
93°
65°
1
93°
65°
2
92°
63°
3
90°
63°
4
90°
64°
5
92°
66°
6
93°
67°
7
93°
65°
8
88°
63°
9
86°
62°
10
88°
64°
11
90°
64°
12
89°
65°
13
89°
62°
14
86°
65°
15
87°
60°
16
88°
61°
17
88°
61°
18
86°
60°
19
86°
61°
20
89°
63°
21
87°
59°
22
87°
58°
23
88°
59°
24
87°
58°
25
84°
59°
26
86°
58°
27
88°
56°
28
84°
55°
29
83°
57°
30
83°
60°
1
86°
60°
2
87°
62°
3
89°
63°
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 83° to 94°, with overnight lows between 55° and 67°. The average high for September is 88° with an average low of 62°. 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.
