S
M
T
W
T
F
S
30
95°
69°
31
89°
65°
1
88°
59°
2
88°
56°
3
85°
57°
4
88°
58°
5
97°
57°
6
75°
65°
7
91°
70°
8
97°
70°
9
106°
74°
10
101°
76°
11
97°
73°
12
94°
68°
13
92°
66°
14
90°
62°
15
86°
62°
16
84°
62°
17
84°
62°
18
86°
57°
19
90°
57°
20
88°
59°
21
83°
61°
22
90°
63°
23
98°
59°
24
97°
62°
25
93°
64°
26
96°
63°
27
92°
69°
28
87°
64°
29
89°
56°
30
92°
58°
1
99°
59°
2
105°
64°
3
101°
69°
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 ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.