S
M
T
W
T
F
S
30
93°
71°
31
93°
72°
1
92°
73°
2
89°
71°
3
88°
69°
4
88°
69°
5
87°
71°
6
87°
71°
7
88°
70°
8
89°
72°
9
90°
72°
10
89°
71°
11
90°
71°
12
88°
70°
13
89°
71°
14
90°
65°
15
87°
65°
16
86°
67°
17
85°
66°
18
86°
69°
19
87°
69°
20
89°
68°
21
86°
69°
22
85°
69°
23
86°
68°
24
84°
68°
25
84°
67°
26
85°
67°
27
85°
66°
28
86°
67°
29
87°
67°
30
87°
66°
1
86°
66°
2
87°
65°
3
87°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Henderson
Henderson's September 2026 forecast shows daily high temperatures ranging from 84° to 93°, with overnight lows between 62° and 73°. The average high for September is 88° with an average low of 69°. 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 Henderson. See also: October | November | December.