S
M
T
W
T
F
S
30
100°
80°
31
101°
80°
1
100°
77°
2
99°
79°
3
98°
81°
4
98°
78°
5
99°
76°
6
98°
73°
7
93°
75°
8
101°
80°
9
88°
73°
10
85°
72°
11
86°
67°
12
82°
66°
13
82°
65°
14
96°
63°
15
94°
72°
16
92°
71°
17
96°
77°
18
96°
76°
19
95°
73°
20
75°
69°
21
74°
65°
22
72°
59°
23
72°
58°
24
75°
63°
25
74°
67°
26
79°
66°
27
81°
64°
28
81°
64°
29
74°
57°
30
75°
58°
1
74°
56°
2
83°
57°
3
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kansas City
Kansas City's September 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 56° and 67°. The average high for September is 76° with an average low of 61°. 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 Kansas City. See also: October | November | December.
