S
M
T
W
T
F
S
30
85°
65°
31
84°
61°
1
81°
60°
2
78°
59°
3
82°
59°
4
84°
63°
5
84°
62°
6
82°
61°
7
80°
58°
8
79°
59°
9
80°
57°
10
78°
56°
11
78°
56°
12
77°
55°
13
76°
56°
14
76°
55°
15
75°
56°
16
77°
56°
17
79°
59°
18
80°
59°
19
77°
56°
20
Hist. Avg.
76°
54°
21
Hist. Avg.
75°
54°
22
Hist. Avg.
75°
54°
23
Hist. Avg.
75°
53°
24
Hist. Avg.
74°
53°
25
Hist. Avg.
74°
52°
26
Hist. Avg.
74°
52°
27
Hist. Avg.
73°
52°
28
Hist. Avg.
73°
51°
29
Hist. Avg.
73°
51°
30
Hist. Avg.
72°
50°
1
Hist. Avg.
72°
50°
2
Hist. Avg.
72°
50°
3
Hist. Avg.
72°
49°
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 75° to 85°, with overnight lows between 55° and 65°. The average high for September is 80° 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.
