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°
84°
12
104°
84°
13
106°
83°
14
105°
81°
15
102°
77°
16
104°
79°
17
103°
80°
18
107°
82°
19
110°
81°
20
105°
81°
21
100°
80°
22
101°
75°
23
103°
74°
24
99°
70°
25
92°
66°
26
95°
69°
27
99°
74°
28
96°
73°
29
94°
73°
30
97°
72°
1
100°
72°
2
100°
71°
3
99°
71°
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 92° to 111°, 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.