S
M
T
W
T
F
S
30
79°
59°
31
81°
63°
1
84°
62°
2
84°
62°
3
84°
56°
4
83°
53°
5
77°
54°
6
76°
59°
7
78°
58°
8
81°
59°
9
82°
60°
10
77°
59°
11
81°
58°
12
81°
59°
13
80°
59°
14
80°
58°
15
82°
59°
16
82°
57°
17
80°
58°
18
79°
52°
19
79°
50°
20
74°
49°
21
71°
48°
22
70°
55°
23
72°
51°
24
76°
48°
25
69°
47°
26
69°
48°
27
71°
47°
28
75°
53°
29
74°
52°
30
75°
51°
1
69°
52°
2
68°
45°
3
68°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Franklin Park
Franklin Park's September 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 45° and 63°. The average high for September is 77° with an average low of 55°. 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 Franklin Park. See also: October | November | December.
