S
M
T
W
T
F
S
30
85°
68°
31
84°
68°
1
84°
63°
2
77°
60°
3
76°
60°
4
76°
61°
5
77°
59°
6
81°
64°
7
84°
66°
8
83°
66°
9
80°
65°
10
81°
66°
11
83°
66°
12
84°
65°
13
83°
67°
14
83°
56°
15
75°
56°
16
72°
57°
17
75°
56°
18
73°
54°
19
74°
55°
20
73°
55°
21
79°
57°
22
79°
61°
23
78°
53°
24
79°
52°
25
74°
52°
26
71°
54°
27
75°
59°
28
75°
59°
29
77°
50°
30
73°
51°
1
69°
56°
2
70°
56°
3
73°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rochelle Park Township
Rochelle Park Township's September 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 50° and 68°. The average high for September is 78° with an average low of 59°. 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 Rochelle Park Township. See also: October | November | December.