S
M
T
W
T
F
S
30
90°
71°
31
89°
70°
1
88°
71°
2
90°
67°
3
87°
66°
4
87°
67°
5
88°
67°
6
90°
70°
7
91°
71°
8
90°
70°
9
86°
71°
10
89°
71°
11
92°
72°
12
92°
72°
13
91°
71°
14
92°
71°
15
92°
70°
16
91°
71°
17
90°
68°
18
91°
68°
19
87°
69°
20
88°
68°
21
89°
61°
22
85°
60°
23
86°
66°
24
86°
61°
25
Hist. Avg.
85°
62°
26
Hist. Avg.
85°
62°
27
Hist. Avg.
85°
61°
28
Hist. Avg.
85°
61°
29
Hist. Avg.
84°
61°
30
Hist. Avg.
84°
60°
1
Hist. Avg.
84°
60°
2
Hist. Avg.
83°
60°
3
Hist. Avg.
83°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rockwall
Rockwall's September 2026 forecast shows daily high temperatures ranging from 85° to 92°, with overnight lows between 60° and 72°. The average high for September is 89° with an average low of 68°. 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 Rockwall. See also: October | November | December.
