S
M
T
W
T
F
S
30
64°
48°
31
62°
48°
1
61°
47°
2
59°
48°
3
60°
46°
4
65°
45°
5
64°
46°
6
60°
44°
7
60°
45°
8
61°
48°
9
60°
45°
10
65°
48°
11
64°
45°
12
61°
49°
13
62°
50°
14
61°
51°
15
67°
50°
16
68°
47°
17
67°
45°
18
62°
44°
19
62°
44°
20
Hist. Avg.
63°
50°
21
Hist. Avg.
63°
50°
22
Hist. Avg.
63°
50°
23
Hist. Avg.
63°
50°
24
Hist. Avg.
64°
50°
25
Hist. Avg.
64°
51°
26
Hist. Avg.
64°
51°
27
Hist. Avg.
64°
51°
28
Hist. Avg.
64°
51°
29
Hist. Avg.
64°
51°
30
Hist. Avg.
65°
51°
1
Hist. Avg.
65°
51°
2
Hist. Avg.
65°
51°
3
Hist. Avg.
65°
51°
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 59° to 68°, with overnight lows between 44° and 51°. The average high for September is 63° with an average low of 47°. 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.
