S
M
T
W
T
F
S
30
99°
76°
31
101°
79°
1
104°
80°
2
104°
80°
3
103°
79°
4
104°
79°
5
105°
78°
6
103°
78°
7
102°
76°
8
97°
72°
9
96°
72°
10
95°
71°
11
94°
74°
12
95°
76°
13
96°
76°
14
97°
73°
15
97°
73°
16
Hist. Avg.
98°
74°
17
Hist. Avg.
98°
74°
18
Hist. Avg.
97°
74°
19
Hist. Avg.
97°
73°
20
Hist. Avg.
96°
73°
21
Hist. Avg.
96°
72°
22
Hist. Avg.
96°
72°
23
Hist. Avg.
95°
72°
24
Hist. Avg.
95°
71°
25
Hist. Avg.
94°
71°
26
Hist. Avg.
94°
70°
27
Hist. Avg.
94°
70°
28
Hist. Avg.
93°
70°
29
Hist. Avg.
93°
69°
30
Hist. Avg.
92°
69°
1
Hist. Avg.
92°
68°
2
Hist. Avg.
92°
68°
3
Hist. Avg.
91°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Scottsdale
Scottsdale's September 2026 forecast shows daily high temperatures ranging from 94° to 105°, with overnight lows between 71° and 80°. The average high for September is 100° 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 Scottsdale. See also: October | November | December.