S
M
T
W
T
F
S
30
94°
66°
31
93°
65°
1
91°
64°
2
92°
62°
3
94°
63°
4
93°
66°
5
94°
65°
6
94°
66°
7
93°
66°
8
93°
65°
9
88°
65°
10
90°
64°
11
90°
65°
12
91°
66°
13
92°
65°
14
93°
66°
15
92°
65°
16
91°
63°
17
90°
62°
18
88°
65°
19
88°
64°
20
Hist. Avg.
89°
62°
21
Hist. Avg.
89°
62°
22
Hist. Avg.
89°
62°
23
Hist. Avg.
88°
62°
24
Hist. Avg.
88°
61°
25
Hist. Avg.
88°
61°
26
Hist. Avg.
88°
61°
27
Hist. Avg.
87°
61°
28
Hist. Avg.
87°
60°
29
Hist. Avg.
87°
60°
30
Hist. Avg.
86°
60°
1
Hist. Avg.
86°
60°
2
Hist. Avg.
86°
60°
3
Hist. Avg.
86°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Porter Ranch
Porter Ranch's September 2026 forecast shows daily high temperatures ranging from 88° to 94°, with overnight lows between 62° and 66°. The average high for September is 92° 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 Porter Ranch. See also: October | November | December.
