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
75°
65°
14
91°
75°
15
88°
69°
16
88°
73°
17
88°
71°
18
89°
67°
19
85°
62°
20
71°
57°
21
72°
56°
22
74°
57°
23
77°
60°
24
80°
62°
25
78°
62°
26
75°
55°
27
81°
63°
28
76°
62°
29
73°
61°
30
71°
61°
1
77°
60°
2
78°
60°
3
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Overland Park
Overland Park's September 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 55° and 75°. The average high for September is 79° with an average low of 63°. 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 Overland Park. See also: October | November | December.