S
M
T
W
T
F
S
30
108°
87°
31
103°
84°
1
102°
82°
2
103°
78°
3
102°
74°
4
104°
76°
5
100°
76°
6
97°
78°
7
103°
76°
8
108°
82°
9
108°
86°
10
118°
89°
11
111°
88°
12
105°
84°
13
105°
84°
14
105°
81°
15
102°
77°
16
104°
79°
17
103°
80°
18
107°
82°
19
110°
79°
20
105°
78°
21
103°
80°
22
101°
79°
23
103°
77°
24
99°
75°
25
98°
70°
26
95°
69°
27
99°
74°
28
98°
73°
29
96°
71°
30
96°
71°
1
94°
69°
2
93°
66°
3
90°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Quartzsite
Quartzsite's September 2026 forecast shows daily high temperatures ranging from 90° to 110°, with overnight lows between 66° and 84°. The average high for September is 101° with an average low of 76°. 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 Quartzsite. See also: October | November | December.