S
M
T
W
T
F
S
30
81°
69°
31
91°
72°
1
94°
73°
2
95°
73°
3
91°
71°
4
91°
72°
5
89°
70°
6
84°
63°
7
81°
61°
8
80°
60°
9
79°
62°
10
80°
62°
11
78°
57°
12
79°
56°
13
78°
58°
14
79°
56°
15
82°
60°
16
82°
61°
17
81°
60°
18
81°
61°
19
82°
61°
20
82°
60°
21
81°
61°
22
82°
60°
23
82°
60°
24
81°
59°
25
82°
60°
26
80°
59°
27
81°
58°
28
80°
58°
29
79°
57°
30
78°
57°
1
78°
56°
2
77°
56°
3
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Orland Park
Orland Park's September 2026 forecast shows daily high temperatures ranging from 77° to 95°, with overnight lows between 55° and 73°. The average high for September is 82° 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 Orland Park. See also: October | November | December.