S
M
T
W
T
F
S
30
98°
75°
31
99°
75°
1
98°
71°
2
99°
74°
3
97°
74°
4
97°
72°
5
100°
71°
6
100°
75°
7
94°
74°
8
99°
75°
9
89°
73°
10
83°
69°
11
84°
61°
12
83°
65°
13
79°
64°
14
94°
66°
15
93°
71°
16
92°
70°
17
94°
75°
18
94°
72°
19
92°
72°
20
74°
64°
21
72°
59°
22
70°
54°
23
71°
55°
24
72°
58°
25
74°
62°
26
74°
59°
27
73°
55°
28
75°
56°
29
74°
55°
30
75°
56°
1
74°
55°
2
73°
52°
3
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lenexa
Lenexa's September 2026 forecast shows daily high temperatures ranging from 70° to 75°, with overnight lows between 52° and 64°. The average high for September is 73° with an average low of 57°. 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 Lenexa. See also: October | November | December.