S
M
T
W
T
F
S
30
87°
61°
31
81°
66°
1
86°
68°
2
80°
59°
3
80°
62°
4
79°
69°
5
86°
67°
6
87°
68°
7
88°
67°
8
87°
65°
9
82°
65°
10
78°
66°
11
82°
59°
12
80°
63°
13
Hist. Avg.
80°
60°
14
Hist. Avg.
80°
59°
15
Hist. Avg.
79°
59°
16
Hist. Avg.
79°
58°
17
Hist. Avg.
79°
58°
18
Hist. Avg.
78°
58°
19
Hist. Avg.
78°
57°
20
Hist. Avg.
78°
57°
21
Hist. Avg.
77°
56°
22
Hist. Avg.
77°
56°
23
Hist. Avg.
76°
56°
24
Hist. Avg.
76°
55°
25
Hist. Avg.
76°
55°
26
Hist. Avg.
75°
54°
27
Hist. Avg.
75°
54°
28
Hist. Avg.
75°
54°
29
Hist. Avg.
74°
53°
30
Hist. Avg.
74°
53°
1
Hist. Avg.
74°
52°
2
Hist. Avg.
73°
52°
3
Hist. Avg.
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lenexa
Lenexa's September 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 59° and 69°. The average high for September is 83° with an average low of 65°. 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.