S
M
T
W
T
F
S
30
93°
69°
31
94°
71°
1
94°
69°
2
93°
70°
3
89°
71°
4
90°
70°
5
89°
70°
6
89°
71°
7
93°
71°
8
93°
70°
9
92°
70°
10
93°
69°
11
93°
70°
12
92°
70°
13
91°
69°
14
88°
66°
15
86°
66°
16
86°
68°
17
88°
68°
18
86°
67°
19
86°
68°
20
85°
68°
21
89°
68°
22
88°
69°
23
84°
63°
24
87°
62°
25
83°
61°
26
Hist. Avg.
86°
64°
27
Hist. Avg.
86°
64°
28
Hist. Avg.
86°
64°
29
Hist. Avg.
85°
63°
30
Hist. Avg.
85°
63°
1
Hist. Avg.
85°
62°
2
Hist. Avg.
84°
62°
3
Hist. Avg.
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Arizona
Arizona's September 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 61° and 71°. The average high for September is 89° with an average low of 68°. 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 Arizona. See also: October | November | December.
