S
M
T
W
T
F
S
30
91°
74°
31
92°
74°
1
91°
73°
2
91°
74°
3
92°
74°
4
92°
73°
5
93°
73°
6
92°
74°
7
92°
72°
8
91°
72°
9
94°
72°
10
92°
72°
11
91°
72°
12
91°
73°
13
92°
72°
14
94°
73°
15
92°
72°
16
92°
72°
17
94°
73°
18
93°
72°
19
94°
72°
20
91°
72°
21
93°
72°
22
93°
74°
23
94°
74°
24
92°
73°
25
92°
74°
26
91°
74°
27
93°
73°
28
91°
73°
29
93°
72°
30
90°
71°
1
91°
72°
2
92°
69°
3
89°
67°
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 89° to 94°, with overnight lows between 67° and 74°. The average high for September is 92° 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 Henderson. See also: October | November | December.