S
M
T
W
T
F
S
30
89°
69°
31
88°
69°
1
88°
68°
2
85°
67°
3
89°
66°
4
89°
68°
5
88°
70°
6
89°
68°
7
87°
63°
8
83°
64°
9
85°
62°
10
85°
62°
11
84°
63°
12
85°
61°
13
86°
63°
14
87°
65°
15
86°
66°
16
86°
65°
17
83°
59°
18
81°
59°
19
78°
60°
20
78°
64°
21
79°
58°
22
78°
61°
23
78°
63°
24
77°
64°
25
80°
63°
26
82°
63°
27
81°
62°
28
80°
62°
29
79°
61°
30
75°
62°
1
76°
60°
2
77°
54°
3
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Scottdale
Scottdale's September 2026 forecast shows daily high temperatures ranging from 74° to 89°, with overnight lows between 53° and 70°. The average high for September is 83° with an average low of 63°. 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 Scottdale. See also: October | November | December.