S
M
T
W
T
F
S
30
85°
64°
31
76°
59°
1
84°
63°
2
83°
62°
3
80°
62°
4
81°
61°
5
82°
61°
6
81°
62°
7
83°
62°
8
82°
62°
9
83°
60°
10
84°
58°
11
83°
61°
12
82°
62°
13
81°
61°
14
82°
50°
15
88°
61°
16
89°
60°
17
88°
61°
18
87°
60°
19
87°
59°
20
86°
59°
21
86°
58°
22
85°
58°
23
86°
57°
24
85°
58°
25
84°
57°
26
80°
56°
27
76°
55°
28
80°
55°
29
82°
54°
30
81°
54°
1
80°
53°
2
82°
54°
3
81°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Prescott
Prescott's September 2026 forecast shows daily high temperatures ranging from 76° to 89°, with overnight lows between 50° and 63°. The average high for September is 83° with an average low of 58°. 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. See also: October | November | December.
