S
M
T
W
T
F
S
30
87°
69°
31
96°
68°
1
98°
75°
2
100°
76°
3
101°
75°
4
99°
76°
5
98°
74°
6
82°
69°
7
87°
64°
8
86°
60°
9
90°
62°
10
97°
71°
11
98°
74°
12
86°
73°
13
90°
75°
14
91°
70°
15
83°
63°
16
86°
60°
17
93°
63°
18
95°
73°
19
89°
71°
20
92°
66°
21
94°
71°
22
84°
64°
23
64°
60°
24
64°
59°
25
73°
50°
26
81°
48°
27
80°
55°
28
80°
54°
29
82°
64°
30
86°
60°
1
89°
60°
2
91°
66°
3
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Apex
Apex's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Apex. See also: October | November | December.
