S
M
T
W
T
F
S
30
95°
62°
31
91°
63°
1
95°
63°
2
95°
62°
3
94°
62°
4
92°
58°
5
90°
56°
6
88°
58°
7
88°
55°
8
86°
56°
9
87°
57°
10
88°
59°
11
90°
61°
12
93°
60°
13
94°
60°
14
92°
57°
15
90°
56°
16
88°
60°
17
88°
62°
18
92°
62°
19
92°
61°
20
91°
62°
21
92°
62°
22
88°
60°
23
87°
56°
24
85°
55°
25
84°
54°
26
82°
55°
27
82°
58°
28
86°
56°
29
85°
56°
30
84°
54°
1
Hist. Avg.
82°
57°
2
Hist. Avg.
81°
56°
3
Hist. Avg.
81°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Piru
Piru's September 2026 forecast shows daily high temperatures ranging from 82° to 95°, with overnight lows between 54° and 63°. The average high for September is 89° with an average low of 59°. 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 Piru. See also: October | November | December.