S
M
T
W
T
F
S
30
104°
83°
31
102°
80°
1
103°
79°
2
105°
79°
3
107°
79°
4
104°
80°
5
103°
79°
6
103°
78°
7
97°
76°
8
100°
75°
9
101°
75°
10
104°
70°
11
104°
75°
12
104°
75°
13
101°
74°
14
100°
73°
15
99°
73°
16
98°
72°
17
102°
72°
18
100°
73°
19
98°
71°
20
95°
66°
21
94°
63°
22
94°
67°
23
96°
69°
24
97°
70°
25
101°
70°
26
100°
69°
27
97°
65°
28
94°
65°
29
91°
64°
30
90°
64°
1
90°
63°
2
91°
62°
3
91°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Buckeye
Buckeye's September 2026 forecast shows daily high temperatures ranging from 90° to 107°, with overnight lows between 60° and 83°. The average high for September is 99° with an average low of 72°. 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 Buckeye. See also: October | November | December.