S
M
T
W
T
F
S
30
99°
77°
31
99°
75°
1
97°
74°
2
97°
75°
3
96°
75°
4
97°
74°
5
97°
75°
6
96°
74°
7
96°
74°
8
95°
73°
9
96°
74°
10
96°
74°
11
95°
73°
12
96°
74°
13
96°
74°
14
96°
72°
15
97°
71°
16
96°
70°
17
95°
71°
18
85°
68°
19
89°
69°
20
93°
68°
21
91°
67°
22
88°
60°
23
84°
59°
24
83°
64°
25
88°
66°
26
91°
66°
27
92°
65°
28
90°
66°
29
89°
66°
30
88°
64°
1
88°
58°
2
81°
55°
3
79°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cedar Hill
Cedar Hill's September 2026 forecast shows daily high temperatures ranging from 79° to 99°, with overnight lows between 55° and 77°. 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 Cedar Hill. See also: October | November | December.