S
M
T
W
T
F
S
30
91°
67°
31
87°
63°
1
85°
60°
2
82°
62°
3
82°
62°
4
87°
59°
5
90°
73°
6
74°
63°
7
91°
75°
8
90°
80°
9
104°
77°
10
97°
74°
11
91°
69°
12
89°
66°
13
85°
66°
14
84°
66°
15
81°
65°
16
79°
66°
17
79°
62°
18
80°
62°
19
82°
64°
20
82°
63°
21
77°
63°
22
82°
65°
23
88°
66°
24
88°
67°
25
87°
68°
26
88°
64°
27
91°
65°
28
89°
64°
29
96°
63°
30
94°
66°
1
96°
66°
2
84°
60°
3
85°
62°
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 82° to 96°, with overnight lows between 60° and 68°. The average high for September is 89° with an average low of 65°. 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.
