S
M
T
W
T
F
S
30
97°
74°
31
97°
78°
1
100°
76°
2
99°
75°
3
98°
74°
4
97°
72°
5
97°
73°
6
98°
73°
7
100°
72°
8
100°
75°
9
99°
72°
10
97°
71°
11
97°
71°
12
98°
72°
13
99°
73°
14
100°
75°
15
102°
76°
16
102°
77°
17
101°
73°
18
101°
73°
19
100°
72°
20
95°
72°
21
99°
74°
22
100°
73°
23
92°
68°
24
93°
69°
25
95°
70°
26
96°
71°
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 Paradise Valley
Paradise Valley's September 2026 forecast shows daily high temperatures ranging from 92° to 102°, with overnight lows between 68° and 78°. The average high for September is 98° with an average low of 73°. 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 Paradise Valley. See also: October | November | December.