S
M
T
W
T
F
S
30
93°
64°
31
95°
63°
1
96°
61°
2
91°
57°
3
91°
57°
4
92°
59°
5
92°
60°
6
93°
61°
7
94°
59°
8
91°
58°
9
91°
55°
10
90°
56°
11
90°
57°
12
92°
60°
13
94°
57°
14
93°
56°
15
92°
63°
16
91°
62°
17
87°
63°
18
87°
63°
19
88°
62°
20
87°
61°
21
87°
62°
22
91°
62°
23
90°
61°
24
90°
62°
25
93°
62°
26
93°
61°
27
92°
57°
28
90°
57°
29
88°
58°
30
88°
60°
1
89°
61°
2
92°
60°
3
91°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Moreno Valley
Moreno Valley's September 2026 forecast shows daily high temperatures ranging from 87° to 96°, with overnight lows between 55° and 64°. The average high for September is 91° with an average low of 60°. 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 Moreno Valley. See also: October | November | December.