S
M
T
W
T
F
S
30
108°
84°
31
105°
80°
1
101°
74°
2
102°
74°
3
101°
75°
4
101°
77°
5
96°
80°
6
94°
79°
7
100°
80°
8
99°
78°
9
100°
80°
10
101°
76°
11
102°
75°
12
97°
74°
13
98°
73°
14
98°
75°
15
102°
74°
16
105°
79°
17
104°
78°
18
97°
70°
19
98°
72°
20
98°
75°
21
100°
75°
22
100°
74°
23
99°
76°
24
96°
72°
25
98°
75°
26
100°
75°
27
100°
74°
28
98°
75°
29
99°
74°
30
99°
73°
1
100°
74°
2
99°
73°
3
98°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rancho Mirage
Rancho Mirage's September 2026 forecast shows daily high temperatures ranging from 94° to 105°, with overnight lows between 70° and 80°. The average high for September is 99° with an average low of 75°. 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 Rancho Mirage. See also: October | November | December.
