S
M
T
W
T
F
S
30
99°
78°
31
100°
78°
1
101°
79°
2
102°
75°
3
98°
75°
4
98°
74°
5
99°
75°
6
99°
75°
7
101°
76°
8
103°
74°
9
102°
76°
10
101°
76°
11
101°
75°
12
102°
78°
13
101°
77°
14
102°
72°
15
99°
76°
16
99°
76°
17
95°
72°
18
95°
73°
19
94°
73°
20
93°
70°
21
91°
70°
22
93°
71°
23
94°
72°
24
93°
72°
25
97°
70°
26
97°
71°
27
96°
69°
28
95°
67°
29
92°
66°
30
92°
70°
1
94°
71°
2
97°
72°
3
98°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sun City
Sun City's September 2026 forecast shows daily high temperatures ranging from 91° to 103°, with overnight lows between 66° and 79°. 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 Sun City. See also: October | November | December.
