S
M
T
W
T
F
S
30
98°
78°
31
98°
77°
1
97°
76°
2
96°
77°
3
96°
77°
4
95°
76°
5
96°
76°
6
95°
75°
7
95°
75°
8
94°
74°
9
95°
75°
10
95°
75°
11
94°
74°
12
95°
75°
13
95°
75°
14
95°
72°
15
95°
72°
16
93°
70°
17
94°
71°
18
95°
65°
19
90°
60°
20
86°
60°
21
87°
62°
22
90°
64°
23
90°
67°
24
91°
67°
25
90°
66°
26
90°
66°
27
89°
61°
28
88°
57°
29
80°
57°
30
84°
61°
1
87°
63°
2
88°
63°
3
89°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rockwell
Rockwell's September 2026 forecast shows daily high temperatures ranging from 80° to 98°, with overnight lows between 57° and 78°. The average high for September is 92° with an average low of 69°. 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 Rockwell. See also: October | November | December.