S
M
T
W
T
F
S
30
108°
81°
31
106°
79°
1
106°
78°
2
103°
77°
3
102°
80°
4
105°
81°
5
108°
81°
6
106°
74°
7
104°
72°
8
101°
72°
9
101°
73°
10
102°
73°
11
106°
74°
12
107°
74°
13
106°
76°
14
106°
79°
15
107°
73°
16
105°
71°
17
103°
73°
18
104°
75°
19
104°
75°
20
103°
72°
21
103°
75°
22
100°
71°
23
95°
68°
24
93°
70°
25
94°
71°
26
95°
71°
27
95°
70°
28
94°
71°
29
94°
67°
30
93°
71°
1
92°
69°
2
92°
66°
3
89°
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 89° to 108°, with overnight lows between 66° and 81°. The average high for September is 101° with an average low of 73°. 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.