S
M
T
W
T
F
S
30
88°
71°
31
88°
72°
1
90°
73°
2
88°
72°
3
89°
73°
4
86°
72°
5
86°
72°
6
87°
73°
7
89°
74°
8
90°
73°
9
89°
72°
10
89°
72°
11
88°
71°
12
89°
72°
13
88°
72°
14
89°
74°
15
88°
72°
16
86°
73°
17
88°
73°
18
86°
72°
19
86°
72°
20
87°
73°
21
88°
72°
22
84°
73°
23
86°
73°
24
84°
71°
25
86°
71°
26
86°
71°
27
83°
71°
28
85°
72°
29
Hist. Avg.
84°
68°
30
Hist. Avg.
83°
68°
1
Hist. Avg.
83°
68°
2
Hist. Avg.
83°
68°
3
Hist. Avg.
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Park Ridge
Park Ridge's September 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 71° and 74°. The average high for September is 87° with an average low of 72°. 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 Park Ridge. See also: October | November | December.