S
M
T
W
T
F
S
30
90°
65°
31
91°
63°
1
93°
62°
2
92°
61°
3
89°
60°
4
88°
59°
5
87°
60°
6
87°
62°
7
89°
63°
8
91°
60°
9
89°
59°
10
88°
60°
11
87°
62°
12
88°
64°
13
90°
65°
14
93°
63°
15
93°
65°
16
92°
67°
17
93°
65°
18
93°
65°
19
92°
64°
20
92°
65°
21
90°
62°
22
89°
61°
23
86°
62°
24
88°
61°
25
91°
63°
26
91°
63°
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 86° to 93°, with overnight lows between 59° and 67°. The average high for September is 90° 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 Porter Ranch. See also: October | November | December.
