S
M
T
W
T
F
S
30
107°
86°
31
99°
85°
1
103°
81°
2
104°
85°
3
106°
82°
4
106°
86°
5
103°
82°
6
107°
82°
7
108°
80°
8
109°
83°
9
107°
89°
10
109°
88°
11
107°
91°
12
105°
80°
13
104°
82°
14
106°
84°
15
103°
84°
16
98°
77°
17
95°
74°
18
101°
75°
19
103°
72°
20
101°
74°
21
97°
66°
22
97°
72°
23
97°
68°
24
98°
71°
25
96°
70°
26
100°
73°
27
97°
73°
28
101°
71°
29
106°
71°
30
102°
66°
1
103°
64°
2
97°
61°
3
96°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Organ Pipe Cactus National Monument
Organ Pipe Cactus National Monument's September 2026 forecast shows daily high temperatures ranging from 96° to 106°, with overnight lows between 61° and 73°. The average high for September is 99° with an average low of 69°. 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 Organ Pipe Cactus National Monument. See also: October | November | December.
