S
M
T
W
T
F
S
30
87°
60°
31
86°
62°
1
86°
61°
2
87°
57°
3
85°
55°
4
89°
57°
5
90°
62°
6
85°
60°
7
82°
53°
8
81°
51°
9
82°
55°
10
85°
56°
11
89°
56°
12
88°
54°
13
88°
59°
14
90°
59°
15
89°
56°
16
86°
54°
17
87°
55°
18
86°
59°
19
88°
56°
20
86°
56°
21
85°
57°
22
83°
56°
23
80°
56°
24
75°
55°
25
77°
55°
26
81°
53°
27
79°
54°
28
80°
54°
29
80°
53°
30
77°
54°
1
74°
54°
2
74°
49°
3
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Prescott Valley
Prescott Valley's September 2026 forecast shows daily high temperatures ranging from 72° to 90°, with overnight lows between 48° and 62°. The average high for September is 83° with an average low of 56°. 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 Prescott Valley. See also: October | November | December.
