S
M
T
W
T
F
S
30
90°
70°
31
89°
69°
1
89°
69°
2
86°
67°
3
89°
66°
4
90°
68°
5
90°
70°
6
89°
68°
7
88°
63°
8
84°
64°
9
86°
62°
10
85°
62°
11
85°
63°
12
86°
62°
13
87°
63°
14
88°
65°
15
87°
66°
16
87°
65°
17
84°
59°
18
81°
59°
19
79°
60°
20
79°
64°
21
80°
58°
22
78°
61°
23
79°
63°
24
78°
64°
25
82°
63°
26
83°
64°
27
82°
63°
28
81°
62°
29
80°
61°
30
76°
62°
1
77°
60°
2
78°
55°
3
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rockdale
Rockdale's September 2026 forecast shows daily high temperatures ranging from 76° to 90°, with overnight lows between 54° and 70°. The average high for September is 84° with an average low of 63°. 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 Rockdale. See also: October | November | December.
