S
M
T
W
T
F
S
30
99°
64°
31
97°
64°
1
95°
62°
2
96°
61°
3
97°
60°
4
97°
62°
5
96°
63°
6
98°
65°
7
99°
65°
8
95°
64°
9
92°
63°
10
94°
63°
11
93°
64°
12
92°
65°
13
94°
64°
14
97°
65°
15
96°
63°
16
92°
61°
17
93°
59°
18
91°
63°
19
95°
59°
20
91°
57°
21
89°
54°
22
Hist. Avg.
91°
60°
23
Hist. Avg.
91°
60°
24
Hist. Avg.
91°
60°
25
Hist. Avg.
90°
59°
26
Hist. Avg.
90°
59°
27
Hist. Avg.
90°
59°
28
Hist. Avg.
89°
59°
29
Hist. Avg.
89°
58°
30
Hist. Avg.
88°
58°
1
Hist. Avg.
88°
58°
2
Hist. Avg.
88°
58°
3
Hist. Avg.
87°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Perris
Perris's September 2026 forecast shows daily high temperatures ranging from 89° to 99°, with overnight lows between 54° and 65°. The average high for September is 95° with an average low of 62°. 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 Perris. See also: October | November | December.
