S
M
T
W
T
F
S
30
79°
63°
31
82°
63°
1
82°
58°
2
81°
55°
3
80°
60°
4
81°
61°
5
76°
61°
6
77°
60°
7
74°
60°
8
77°
52°
9
74°
51°
10
72°
58°
11
75°
59°
12
79°
58°
13
79°
58°
14
77°
59°
15
78°
60°
16
72°
51°
17
71°
57°
18
Hist. Avg.
72°
51°
19
Hist. Avg.
72°
51°
20
Hist. Avg.
72°
51°
21
Hist. Avg.
71°
50°
22
Hist. Avg.
71°
50°
23
Hist. Avg.
70°
49°
24
Hist. Avg.
70°
49°
25
Hist. Avg.
69°
48°
26
Hist. Avg.
69°
48°
27
Hist. Avg.
68°
48°
28
Hist. Avg.
68°
47°
29
Hist. Avg.
67°
47°
30
Hist. Avg.
67°
46°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
66°
45°
3
Hist. Avg.
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Oak Park
Oak Park's September 2026 forecast shows daily high temperatures ranging from 71° to 82°, with overnight lows between 51° and 63°. The average high for September is 77° with an average low of 58°. 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 Oak Park. See also: October | November | December.
