S
M
T
W
T
F
S
30
91°
66°
31
88°
68°
1
91°
68°
2
92°
67°
3
91°
66°
4
89°
62°
5
87°
62°
6
85°
63°
7
84°
60°
8
83°
61°
9
83°
62°
10
85°
63°
11
85°
64°
12
87°
64°
13
89°
65°
14
89°
62°
15
86°
61°
16
84°
64°
17
84°
66°
18
88°
66°
19
87°
65°
20
89°
66°
21
89°
66°
22
84°
64°
23
84°
60°
24
83°
59°
25
82°
58°
26
80°
59°
27
80°
61°
28
82°
60°
29
81°
60°
30
81°
58°
1
Hist. Avg.
86°
59°
2
Hist. Avg.
86°
59°
3
Hist. Avg.
86°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Pasadena
South Pasadena's September 2026 forecast shows daily high temperatures ranging from 80° to 92°, with overnight lows between 58° and 68°. The average high for September is 86° with an average low of 63°. 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 South Pasadena. See also: October | November | December.
