S
M
T
W
T
F
S
30
89°
65°
31
90°
63°
1
88°
59°
2
89°
57°
3
89°
63°
4
90°
64°
5
89°
59°
6
90°
58°
7
89°
61°
8
87°
60°
9
88°
57°
10
80°
55°
11
79°
54°
12
80°
61°
13
83°
56°
14
78°
54°
15
78°
55°
16
79°
54°
17
79°
51°
18
78°
50°
19
80°
49°
20
79°
46°
21
77°
48°
22
78°
53°
23
82°
56°
24
83°
52°
25
84°
50°
26
83°
54°
27
83°
53°
28
82°
52°
29
84°
54°
30
84°
53°
1
83°
51°
2
83°
50°
3
82°
50°
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 77° to 90°, with overnight lows between 46° and 65°. The average high for September is 83° with an average low of 55°. 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.
