S
M
T
W
T
F
S
30
83°
64°
31
78°
65°
1
80°
65°
2
84°
60°
3
83°
55°
4
76°
56°
5
75°
63°
6
81°
59°
7
80°
55°
8
75°
57°
9
74°
59°
10
75°
62°
11
77°
61°
12
82°
62°
13
81°
61°
14
82°
56°
15
80°
54°
16
72°
55°
17
72°
51°
18
73°
51°
19
71°
48°
20
70°
48°
21
69°
49°
22
70°
56°
23
71°
49°
24
72°
55°
25
75°
56°
26
72°
57°
27
77°
56°
28
77°
53°
29
76°
51°
30
70°
51°
1
69°
52°
2
74°
53°
3
67°
44°
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 67° to 84°, with overnight lows between 44° and 65°. The average high for September is 76° with an average low of 56°. 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.
