S
M
T
W
T
F
S
30
78°
55°
31
81°
57°
1
82°
56°
2
82°
54°
3
78°
56°
4
77°
56°
5
81°
57°
6
83°
57°
7
83°
55°
8
82°
56°
9
82°
53°
10
78°
49°
11
77°
50°
12
79°
52°
13
78°
51°
14
77°
50°
15
79°
51°
16
81°
53°
17
80°
57°
18
83°
57°
19
75°
56°
20
76°
56°
21
81°
55°
22
82°
57°
23
80°
56°
24
81°
56°
25
82°
55°
26
81°
55°
27
82°
54°
28
77°
55°
29
76°
55°
30
77°
54°
1
81°
55°
2
82°
54°
3
81°
53°
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 75° to 83°, with overnight lows between 49° and 57°. The average high for September is 80° with an average low of 55°. 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.