S
M
T
W
T
F
S
30
101°
79°
31
102°
81°
1
100°
80°
2
100°
78°
3
94°
76°
4
100°
77°
5
100°
79°
6
100°
78°
7
102°
79°
8
102°
81°
9
102°
80°
10
100°
80°
11
101°
82°
12
102°
79°
13
101°
76°
14
99°
75°
15
96°
73°
16
93°
71°
17
94°
71°
18
91°
70°
19
90°
66°
20
88°
67°
21
87°
65°
22
92°
71°
23
91°
70°
24
90°
70°
25
83°
69°
26
87°
69°
27
87°
68°
28
89°
69°
29
87°
68°
30
85°
60°
1
78°
56°
2
77°
57°
3
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Coppell
Coppell's September 2026 forecast shows daily high temperatures ranging from 77° to 102°, with overnight lows between 56° and 82°. The average high for September is 91° with an average low of 70°. 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 Coppell. See also: October | November | December.
