S
M
T
W
T
F
S
30
102°
77°
31
102°
80°
1
103°
81°
2
101°
79°
3
102°
78°
4
101°
78°
5
106°
84°
6
106°
84°
7
100°
79°
8
100°
80°
9
Hist. Avg.
103°
80°
10
Hist. Avg.
102°
80°
11
Hist. Avg.
102°
80°
12
Hist. Avg.
102°
80°
13
Hist. Avg.
102°
79°
14
Hist. Avg.
101°
79°
15
Hist. Avg.
101°
79°
16
Hist. Avg.
101°
78°
17
Hist. Avg.
100°
78°
18
Hist. Avg.
100°
78°
19
Hist. Avg.
100°
77°
20
Hist. Avg.
99°
77°
21
Hist. Avg.
99°
76°
22
Hist. Avg.
99°
76°
23
Hist. Avg.
98°
76°
24
Hist. Avg.
98°
75°
25
Hist. Avg.
97°
75°
26
Hist. Avg.
97°
74°
27
Hist. Avg.
97°
74°
28
Hist. Avg.
96°
74°
29
Hist. Avg.
96°
73°
30
Hist. Avg.
96°
73°
1
Hist. Avg.
95°
72°
2
Hist. Avg.
95°
72°
3
Hist. Avg.
94°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Phoenix
Phoenix's September 2026 forecast shows daily high temperatures ranging from 100° to 106°, with overnight lows between 77° and 84°. The average high for September is 102° with an average low of 80°. 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 Phoenix. See also: October | November | December.
